Crusade

As soon as we had settled into a comfortable pace, I took the opportunity to make a sensitive but necessary enquiry about Estrith’s nocturnal adventure the night before.

I took it as a mark of our friendship that Estrith was able to speak frankly to me.

‘It came as a bit of a shock to hear the Count denouncing the English from his bedchamber; we were in the next chamber, and Bertrand was terrified of him. He had to smuggle me out before his father discovered us. I heard all the details from Adela this morning. He’s a dangerous man.’

‘So, now you’ve bedded a Count; the social standing of your conquests is improving.’

‘As I feared, you don’t approve. You know I can’t resist a sturdily constructed roof — and Bertrand’s a well-put-together structure with strong timbers and a king-post that bears a good load under stress.’

Estrith’s frank architectural analogy made me smile, but I was concerned about her.

‘Estrith, be serious… it’s not that I don’t approve, but I don’t want you to come to any harm. You’ve only just met Bertrand — he could be as dangerous as his father, who’s not only mad, he’s also delusional.’

‘I’m sorry, Edgar, we’ve always been honest with one another. You’re right. It was a bit foolish, but he’s a handsome young brute and… we had had too much wine. In my heart, I cannot believe what we did was wrong. But thank you, I will be more careful.’

I was still concerned about Estrith’s evident fondness for Bertrand; the father’s behaviour made me very wary of the son. Besides which, deep down, I was a little jealous of the young man.

By the time we returned to Normandy, the winter of 1094 beckoned and we decided to stay in Rouen until early the next year. It was a frustrating time for all of us. Although we were privileged to be under the benign eye of Duke Robert, none of us was any nearer to discovering our destiny.

Edwin became older and wiser, Sweyn and Adela honed their fighting skills relentlessly, to the point where it did not seem possible for them to get any better, and I continued to admire Estrith from afar.

Sweyn’s latest accolade was to become the victor ludo-rum in Rouen’s annual test of knightly skills and be all but unbeatable in the joust, while Adela persuaded more and more men to adopt the Mos Militum — so much so that it started to be called ‘Adela’s Code’.

Meanwhile, I was fascinated by Estrith’s new project. She had been sketching it for days and her outline was immediately recognizable, even to a layman, as the timber frame for the roof of a large building. She showed it to me with the glee of a child with a new toy.

‘It’s a cat’s cradle in wood in three ascending layers, closing at the apex, with the whole structure supported by the twenty-four “feet” made of timber. At each of the two tiers above the bottom level there are also twenty-four smaller feet, each one throwing the structure further into the void.’

Estrith explained that not only was the geometry of the roof vital, the precise construction of the joints was also essential to the strength of the structure.

‘It is not just a matter of mortising and tenoning them, it is a matter of the angle at which you cut them! The twenty-four supports, twelve on each side, act like the head of a mason’s hammer, pulling the weight downwards through the wall rather than outwards against it. They are the key to a more elegant roof and much higher walls. I’ve decided to call them “hammer beams”, each of which will sit on a stone corbel projecting from the top of the wall of the building. The roof won’t need any other support.’

I could see the main point: the twelve feet on either side of the structure did not have cross-beams connecting them to the twelve feet on the other side — a feature of all rectangular roofs I had ever seen. As far as I knew, only domed roofs could be constructed without connecting beams, so I remained sceptical.

‘How can it work? How will it take the weight of the laths for the thatch, and the thatch itself?’

‘Oh no, this is not for a thatched roof — it is for a lead or tiled roof, or even a stone one.’

‘Surely not, it will collapse under the weight.’

‘It will not!’

Estrith was furious that I should doubt her.

‘I have been careful in my calculations; it is simply a matter of arithmetic. I now need someone to build one. To prove it to you!’

After much debate through the spring of 1095, we had decided to return to Sicily. Count Roger had asked Robert for help to launch a campaign to add Malta to his fiefdom, and we all relished the thought of returning to the Mediterranean and renewing our friendship with him.

However, events elsewhere were destined to take us in another direction.

For months, much of the idle talk among knights had been dominated by Raymond of Toulouse’s calls for an end to Muslim rule in the Holy Land. Then, in March of 1095, Pope Urban II, a clever and ambitious pontiff, was holding an ecclesiastical council in Piacenza in northern Italy when a lightning bolt struck from out of the blue.