Son 2 of Hinrich and Gesina Willemssen
Source: Knock, Marvin, Knock Family, (Sioux Fls., SD, http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=GET&db=knock&id=I19245, xxxi Dec MMVIII)
"... Baby Boy WILLEMSSEN ... Sex: M Birth: 29 Mar 1913 in ? Death: 29 Mar 1913 in ? ... Change Date: 31 Dec 2008 ...
Father: Hinderk WILLEMSSEN b: 3 Apr 1873 in ? Mother: Gesina SCHOELKEN b: 27 May 1881 in ?" <>
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