The Repository Stone Record

Harlech's Putlog Holes Do Not Prove Who Designed It

October 2, 2026 · Runtime 8:34 · Watch on YouTube

A small square hole in a castle wall has been used to name the architect who designed it: putlog holes at Harlech, cited alongside round arches and corbelled towers as proof of a Savoyard signature. The technique is a thousand years older than Savoy, and part of the comparison used to prove it was built after the architect had already left the region.

Chapters

  1. 0:00 A hole that names an architect
  2. 0:38 The claim: a Savoyard signature
  3. 1:50 What a putlog hole is
  4. 2:17 Older than Savoy
  5. 3:33 A likeness that runs backward
  6. 4:24 How to read the row
  7. 4:45 Harlech, season by season
  8. 5:51 The siege of 1294–95
  9. 6:26 The lifeline fails, 1404
  10. 7:02 What the stone can prove
  11. 7:32 Read the row, not the hand

Transcript

A hole that names an architect 0:00

This is a putlog hole. A small square socket, left in a stone wall by the scaffolding that built it. This exact kind of hole, in the walls of Harlech Castle, has been used to name the man who designed the place. This episode reads the same hole for what it can actually prove. And it is not that.

Every wall in this story is read twice: once for the claim it is asked to carry, and once for what it can actually carry. The claim breaks in two places. What is left, once it breaks, still tells you something, just not the thing everyone repeats.

The claim: a Savoyard signature 0:38

Here is the claim. Harlech's round-arched doorways, its corbelled towers, and the positioning of its putlog holes are cited together as evidence that one man carried a Savoyard vocabulary into Wales: Master James of Saint George, the king's military architect.

James was born around twelve thirty, probably at Saint-Prex, in Savoy. His father was a mason too, likely the builder of Lausanne Cathedral. James was working on his own by twelve sixty-five, and then for two counts of Savoy in turn: Yverdon, Saint-Georges-d'Esperance, La Cote-Saint-Andre, Voiron.

His last known project in Savoy was Chatel-Argent, in the summer of twelve seventy-five. After that, the paper trail in Savoy simply stops. Everything that follows happens in Wales.

King Edward the First had met James in Savoy in twelve seventy-three. After a war with Llywelyn in twelve seventy-seven, he called him to Wales. By around twelve eighty-five James held the title Master of the King's Works in Wales. Harlech, begun in twelve eighty-three, was his.

What a putlog hole is 1:50

So what is a putlog hole, actually. When a wall goes up, the masons need a platform to stand on. The platform rests on poles, called putlogs, and the putlogs need somewhere to sit in the wall itself. That somewhere is the hole. The technique is Roman. The word is not: putlog and putlock only date from the seventeenth century. The hole is older than its own name.

Older than Savoy 2:17

And that is the first problem. Putlog holes are not a regional signature. The technique is older than Savoy by a thousand years -- it holds up the Colosseum in Rome. A hole in a wall does not say Savoy. It says: someone built this with scaffolding, which is everyone.

They survive in plain sight, close to home. At Cardiff Castle. At Beaumaris, this channel's own second episode. At Aigues-Mortes, on the French coast. In the wall of a fourteenth-century church tower in Essex that has nothing to do with Wales, or with Savoy, at all.

So the claim was never about the hole alone. It is a set of three features together: corbelled towers, round-arched doorways, and putlog placement, all compared against Savoy building. Look closer at what that comparison leaves out.

Harlech's most distinctive feature is its twin-towered gatehouse -- the thing every guidebook photograph shows. And the research behind this comparison says plainly: key features, such as the gatehouses, are not seen in Savoyard architecture at all. The boldest similarity was never on the list.

A likeness that runs backward 3:33

The second problem is timing. Some of the Savoy buildings used in the comparison were put up after James had already left the region for Wales. A likeness cannot travel backward. If the Savoy example postdates the man, he cannot be where the likeness came from.

The same claim is made for Beaumaris -- this channel's second episode, also credited to James. It carries the same two problems: a hole that names no region, and a comparison whose own dates do not line up.

Which is why recent research suggests something less cinematic: James's role, and Savoyard influence generally, may have been overstated. The stronger reading is project management, not personal design -- a crew of Savoyard masons and engineers circulating between sites, not one signature hand.

How to read the row 4:24

Read a putlog hole correctly and it tells you something different. A single hole says nothing. A row of them, level and evenly spaced, marks one lift of scaffolding -- roughly one stage of work. Filled after building, or left open. The question worth asking is which season, not whose hand.

Harlech, season by season 4:45

Now put that question to Harlech itself. Money for the first phase of building arrived in the middle of May, twelve eighty-two. Carpenters and thirty-five stonemasons were dispatched in June and July to begin the work.

By the winter of twelve eighty-three, the first fifteen feet of the inner walls were already standing. Fifteen feet is not a guess. It is one season's climb, the height a scaffold reached before the weather stopped the work.

At the height of construction, in twelve eighty-six, the workforce numbered five hundred and forty-six general labourers, one hundred and fifteen quarriers, thirty blacksmiths, twenty-two carpenters, and two hundred and twenty-seven stonemasons. The project was costing nearly two hundred and forty pounds a month.

The castle was essentially complete by the end of twelve eighty-nine, at a total cost near eight thousand, one hundred and ninety pounds. Six building seasons, start to finish -- a figure the account rolls and the standing wall can both be checked against.

The siege of 1294–95 5:51

Those six seasons were tested in the winter of twelve ninety-four, when Madog ap Llywelyn's rising reached Harlech. The castle held with a garrison of thirty-six: a constable, thirty men including ten crossbowmen, a chaplain, a smith, a carpenter, a mason.

They were supplied by sea, from Ireland, through a water gate and a guarded stairway of one hundred and twenty-seven steps down to the tideline. In the thirteenth century the sea reached close enough to climb. The wall the masons raised held the siege the scaffolding once climbed to build.

The lifeline fails, 1404 6:26

The same lifeline failed once. In fourteen oh-four, Owain Glyndwr's rising besieged Harlech again. French and Breton ships loyal to the Welsh cause patrolled the coast, and no supply could reach the water gate this time. The garrison fell to twenty-one men, and the castle surrendered.

Harlech became Glyndwr's headquarters, the seat of an independent Welsh government, for the next four years. The walls had not weakened. The sea that once saved them had simply been taken away from them.

What the stone can prove 7:02

So separate the two questions the stone gets asked. Whose signature is this: the holes cannot say, because the technique belongs to no one region and the comparison used to prove it does not hold its own dates. What season, how fast, in what order, and what could break it: that, a row of holes and a dated siege can actually answer. Twelve ninety-four and fourteen oh-four are the same wall asked the same question twice, with the sea giving two different answers.

Read the row, not the hand 7:32

So read a putlog hole like this. Find the row, not the single hole. Check whether it was filled after building or left open. Compare the height against a documented pause, if one exists. Ask what campaign raised the wall to here -- never whose hand held the chisel. The second question is the one the hole was never built to answer.

It is the same check this channel has already run twice: on the contract that predated Bolton's licence, on the letter where James justified Beaumaris's own overspend. Read the document first. Trust the stone only where the two can be checked against each other.

One more hole is worth carrying forward: the arrow loop. In nineteen eighty-two, two researchers tested how well a real archer could actually shoot through one, at a castle not far from here, in Wales. Next time: what an arrow loop was built to do, against what the experiment found.

Description and sources

The belief: the placement of Harlech's putlog holes, together with its round-arched doorways and corbelled towers, is cited as physical evidence that the Savoyard military architect Master James of Saint George personally designed the castle (Wikipedia, citing Coldstream, "James of St George", 2010, pp. 39–40).

Two problems. Putlog holes are a universal scaffolding technique, a thousand years older than Savoy — they hold up the Colosseum, and survive at Cardiff Castle, at Beaumaris, and in a fourteenth-century church tower in Essex that has nothing to do with either Wales or Savoy. And part of the Savoy comparison set was built after James had already left the region (Coldstream, p. 43) — a likeness that cannot travel backward in time.

What is left: Harlech's own documented chronology. Money arrived in May 1282; the first fifteen feet of the inner walls stood by the winter of 1283; the workforce peaked at nearly a thousand men in 1286; the castle was essentially complete by the end of 1289. Six building seasons, checkable twice — in the account and, in principle, in the wall itself. The stone can testify to the pace of a campaign. It cannot sign an architect's name.

PRINT-READY, FROM THIS CHANNEL

How to Read a Castle, Vol. 01 — the method, the measured drawings and the documents behind the first two episodes

https://therepository.gumroad.com/l/read-a-castle

PRIMARY SOURCES

ARCHIVE PLATES — public-domain documents, with author, date, archive and licence.

  • w_lemay — 2018-12-22 09:51:15 | Wikimedia Commons | CC0
  • Nigel Parker — 2022-07-13 18:47:24 | Wikimedia Commons | CC0
  • Unknown artist Unknown artist — 1882 | Wikimedia Commons | Public domain
  • Talsarnau Times — 2026-03-22 06:47:42 | Wikimedia Commons | CC BY 4.0
  • Photochrom Print Collection — between 1890 and 1900 | Wikimedia Commons | Public domain
  • Buck, Samuel, 1696-1779 Buck, Nathaniel, engraver. — 1742 | Wikimedia Commons | Public domain

... and 2 more plates, each credited on screen in the video and listed in this project's manifest.

Stone Record reads castles as documents — what the paperwork and the standing masonry actually say, against what gets repeated. Primary sources are linked above.

Every image is public-domain or CC BY material from Wikimedia Commons, credited on screen — nothing is AI-generated. The diagrams and set-type quotations are code: drawings of the argument, not measured surveys. The putlog hole shown at close range is a general example from Hore Abbey, County Tipperary, Ireland — not Harlech — used because no photograph of Harlech's own holes met this channel's licence.

#castles #medievalhistory #architecture