Quellen:
- Seine Seite bei Holst:
"# ID: I653771260
# Name: Willy HOLST
# Given Name: Willy
# Surname: Holst
# Sex: M
# Birth: 1874 in Leipzig
# Death: 1927
...
Father: Wilhelm Georg HOLST b: 24 Feb 1839 in Frørup Sg, Sønder Tyrstrup Hr, Haderslev Amt, Denmark
Mother: Leontine REUTER
Marriage 1 Auguste Amalie JAHN b: 1886
Children
1. Has No Children Hellmuth HOLST
2. Has No Children Hans Peter HOLST
"