Background
He was the son of Atwood Slater and Julia E. (Scott) Slater.
He was the son of Atwood Slater and Julia E. (Scott) Slater.
He attended the public schools and Greenwich Academy. Then he studied law, was admitted to the bar in Connecticut in 1888, but enrolled in Columbia Law School the same year. He finished his law course at Columbia in 1890, but was among 33 alumni of the class of 1890 who received their Bachelor of Laws degrees only in 1934.
He was admitted to the bar in New York in 1889, and practiced in New York City. He was Counsel of the Town of Rye from 1900 to 1906, and a Trustee of the Village of Portuguese Chester from 1902 to 1908. In the Assembly he made the first speech advocating to give women the right to vote.
In November 1918, he was elected Surrogate of Westchester County, and was re-elected in 1924, 1930 and 1936.
Remaining in office from 1919 until his death in 1937. Slater died on February 23, 1937, in Moore County Hospital in Pinehurst, North Carolina, of appendicitis.
And was buried in Rye, New New York Democrat William J. Sheils, whom he had defeated at the election in November 1936, was appointed by Government.
Herbert H. Lehman to fill the vacancy until the end of the year.
Slater was a member of the New York State Assembly (Westchester Company, 4th Doctorate) in 1912. He was a member of the New York State Senate (24th Doctorate) from 1915 to 1918, sitting in the 138th, 139th, 140th and 141st New York State Legislatures.