William married Helen Olive Miller on 3 Jun 1908 in Congretional parsonage, Nashua, Iowa, USA. Helen (daughter of Christian Hansen Møller and Cathrine Andersen) was born on 5 Jun 1886 in Plainfield, Bremer County, Iowa, USA. [Group Sheet] [Family Chart]

1. Paul Cornelius Jacobs was born on 22 Jan 1922 in Eagle Grove, Iowa, USA; died on 13 Nov 1988; was buried in Haven of Rest Cemetery, Gig Harbor, Pierce County, Washington, USA.