This was a busy year for Mansfield, as he also organized two companies of the Texas National Guard.

Mansfield rose to the rank of captain in the National Guard.

[2] He served in Congress until his death at Bethesda, Maryland on July 12, 1947.

On January 18, 1888, Mansfield married Annie Scott Bruce (1867-1937).

[3] They had four children together, their son Bruce Jefferson Mansfield (c.1890-1966), and their daughters Susie (died in infancy), Margaret (1893-1970), and Jaquelin (1900-1997).