I see that I was totally unclear!
Alice Halle is the sister of a zombie, who is herself married to a zombie;
Reginald de Aula is the son of a zombie;
Thomas de Aula, II is the sibling of one zombie and the nephew of another.
Gerrit Evert Euwe
he has some zombies (or just private profiles?) in his neighbourhood:
Father, grandfather, child and half-brother
and perhaps I overlooked a few