David Keeler was the first son and fifth child of Timothy Baldwin Clark and Mary (Polly) Keeler. He was born on 20 November 1811 probably in Trumbull County, Ohio. He married Mary Jarvis on 14 January 1836 in DuPage County, Illinois. In 1834 David bought two 80-acre plots on the road south from Plainfield, Illinois. He later brought other property in Downer Grove, Illinois in 1839. David received from the General Land Office patent letters signed by President Martin Van Buren to affirmed he had purchased 160 acres. He then traded in his Downer Grove land and put together a farm totaling 350 acres that straddled the Chicago-Plainfield Road. By 1848 David's father Timothy Baldwin was living with him and past away in May 1848. David was working on a windmill on his farm when he was struck by lighting and died on 17 March 1850. He is buried in the Hillcrest Cemetery, Barbers Corners, Illinois. David and his wife Mary Jarvis had six children.