There is no relation, as far as I know. "Ulf" is a common name among Ulfs. Yet, I somehow feel obliged to defend this great pioneer, to whom I am not at all related.

You simply do not understand the Wisdom of Ulf.

While some of the sayings of Ulf are just too profound for utterance, his explanation of building a house from the roof downward is a practical hint about how to use the building system, which will almost let you do that. This can sometimes make measuring faster and easier than laying things out on the ground.

So there.