Dan Willoughby was born at Grace City, son of Ellis and Sarah Elija Willoughby. He married Helen Dahl. She was born on January 27, 1896 at Valley City. Dan and Helen farmed near Grace City and later moved into town, where they lived throughout their married lives.
The following children were born to them: Anna, Fern, Phyllane, Kermit, Marjorie, Darwin and Dee.
Helen died on May 20, 1937; Dan died in 1981. Both are buried at Grace City Cemetery.
Source: A History of Foster County 1983 Page 65B