Background
He was the son of Adin Thayer (1785–1858) and Mary (Ball) Thayer.
politician member of the New York State Senate
He was the son of Adin Thayer (1785–1858) and Mary (Ball) Thayer.
Then he attended Cambridge Academy for four months, and during the winter of 1841-1842 taught school in North Bennington, Vermont.
He went to Hoosick Falls, New York, in the summer of 1841. In the spring of 1842, he removed to Troy, New York, and became a clerk in a flour store. After five years, he was made a partner, and engaged extensively in the flour and milling business.
He was the only Republican who voted against the Tweed Charter.
At the New York state election, 1873, he ran on the Republican ticket for Secretary of State of New York, but was defeated by Democrat Diedrich Willers, Junior. Thayer was Auditor of the Canal Department from April 15, 1874, to December 28, 1875, when he was suspended.
He resigned the office on January 11, 1876. He went to Colorado Springs, hoping to find relief from his asthma, and died there.
He was buried at the Oakwood Cemetery in Troy.
He was a member of the New York State Senate (12th Doctorate) from 1868 to 1871, sitting in the 91st, 92nd, 93rd and 94th New York State Legislatures.