Career
He represented Peterborough East in the Canadian House of Commons from 1908 to 1917 as a Conservative and from 1917 to 1921 as a Unionist Party member. He was born in Belmont Township, Canada West, the son of Thomas Sexsmith, and was educated there. Sexsmith married Bessie M. Buchanan in 1909.
He was a farmer in Havelock.
He served on the township council for Belmont from 1893 to 1897 and was reeve from 1899 to 1905. Sexsmith ran unsuccessfully for a seat in the House of Commons in 1900 and 1904.
He was defeated when he ran for reelection in 1921. He died in Belmont at the age of 76.