He taught a country school for one term while attending the University of Wisconsin, and was principal of Mazomanie High School for one year after graduation.[1] He was admitted to the State Bar of Wisconsin in July 1891 and took up law practice in Madison.
Warner was the Republican nominee for district attorney of Dane County in 1892 but lost. He was a law examiner in the Wisconsin Department of Justice from 1899 to 1903[1] and secretary of the Dane County Republican campaign committee from 1902 to 1904.
He did not run for re-election in 1906, and was succeeded in the Assembly by Democrat Elmore Elver.
Warner long continued in the practice of law, eventually forming a partnership with Fred E. Risser. Risser married Warner's daughter, Elizabeth, and served three terms in the State Senate as a member of the short-lived Wisconsin Progressive Party.[3]
Personal life
On July 5, 1894, he married Lillian Dale Baker, a classmate at Madison High School and also at the University of Wisconsin.[1] They maintained a family farm, Merrill Springs Farm, at a location which was then outside Madison.
Lillian Warner died on May 23, 1924.[4] Ernest Warner, who had been president of the Madison Park and Pleasure Drive Association since 1912, died after an automobile accident in July 1930.[5] Within two weeks of his death, the Ernest N. Warner Memorial Park Committee was formed to raise $20,000 to buy the beach that later became Warner Park as a memorial.[6]
