Family with parents
father Parents HeinrichTreu ElisabethBode	Hermann AndreasTreu 1849–1926
mother Parents AlbertLijsting Geessiende Wit	GrietjeLijsting 1854–1919
elder brother Family Maria Margaretha“Mies” Sijses Hermann AndreasTreu Gerardina Grietje“Dinie” Treu Johannes Jacobus“Joop” Treu	Heinrich HermannTreu 1875–1924
elder brother Family (none)	Carl Moritz FriederichTreu 1878–1879
elder sister Family Andreas Ignatius AntoniusTrip	Caroline Elise Gezina MargarethaTreu