Fredrick Seymour Ellis (January 17, 1830June 6, 1879) was an American surveyor, insurance agent, and politician. He was the 18th Mayor of Green Bay, Wisconsin, and, as a member of the Democratic Party, he represented Brown County in the Wisconsin State Senate (1864–1866) and Assembly (1861–1864). He was the son of Wisconsin pioneer Albert Gallatin Ellis and brother of Wisconsin judge Eleazor H. Ellis. Early life and career Ellis was born January 17, 1830, in what is now Allouez, Wisconsin. At the time, it was unorganized land of Brown County outside the frontier town of Green Bay, which was then part of the Michigan Territory. His father, Albert Gallatin Ellis, was one of the first American settlers at Green Bay. He trained as a surveyor and worked as an assistant to his father, who was surveyor general of the Wisconsin Territory. He then partnered with his brother, Eleazor H. Ellis, in a land agency and mortgage lending business. Ellis helped raise a company of volunteers known as the Green Bay Guards for service in the American Civil War. Though Ellis was initially elected their captain, he did not end up entering the service. The Green Bay Guards became part of the 4th Wisconsin Infantry Regiment. Political career Ellis was elected to the Wisconsin State Assembly in 1860, and was the first member of the Assembly who had been born in the territory of Wisconsin. He was reelected in 1861 and 1862. In 1863, he was elected to a two-year term in the Wisconsin State Senate. After serving six years as chairman of the Brown County Board of Supervisors, Ellis was mayor of Green Bay in 1876. After his term as mayor, he was elected treasurer of Brown County. In this role, he ran into scandal when the county went into debt. Ellis attempted to repair the debt by selling off his own possessions, and cashing in a $2,000 insurance policy, but his friends in the community offered to assist in covering the balance. Personal life and family Frederick Ellis was the third son of Albert Gallatin Ellis and his first wife, Pamela Ellis (née Holmes). Albert G. Ellis initially came to Green Bay in 1821 as an Episcopalian missionary and teacher; he became surveyor general for the Wisconsin Territory, he served in the Territorial Legislature for several years, and was Mayor of Stevens Point, Wisconsin, for 7 of the first