You put all three names in the blank, which is not what the ruled line asks for and is what the man who wrote it would have understood.
MioneIt wanted a name for a name. It did not say the names had to be different.
The clause comes back legible and the blank closes over three names instead of one, and the school is held by a household of three rather than a line of one.
MalfoidSo we are all bound now. All three of us, on the same page, until one of us dies or the building does.
It is not a good outcome. It is the one where nobody is unwritten, and that is the only kind of good this house has ever produced.