William H. Joslin was a member of the Wisconsin State Assembly.
Joslin was born on September 25, 1829, in Ypsilanti, Michigan.
Joslin died on September 2, 1926, in Richland Center, Wisconsin.
During the American Civil War, Joslin served with the 25th Wisconsin Volunteer Infantry Regiment of the Union Army.
Additionally, Joslin took part in the Meridian Expedition and Sherman's March to the Sea.