William of Poitier's Guesta Isn't a Chronology, but a Narrative Story

The next record is a big one, and it really forms the main basis for the story of harold's alleged promise. It's contained in the norman account of william a poitier. He was probably in his forties when all this was said. To have gone down. And he'd end up writing his own guesta a few years afterwards. So like carmen, poitier's gesta was written close in time to the events. But since we don't have other writers confirming things, we're left wondering if ordric got it wrong.