In that case, it would be spelled 'buastard', per the thread title and first post.

Brastards?
Beastards?
Boastards?
Brastards?
Bwastards?

At any rate, I've no quarrel with Lizzie, but think it a bit unsavoury to begin a discussion which from previous experience she would have to expect to become argumentative by invoking the name of a much liked and now passed on individual, thus implying that anyone disagreeing is in some way dissing his memory.

Perhaps I am wrong, Lizzie. But that is how I see this.