The name of this 4,120-foot peak, previously known as “Ragged Mountain,” first appears on a 1904 map by the U.S. Geological Survey. Though it’s unknown when exactly Colvin gave the peak its present name, Seymour Mountain became the last High Peak to be named after a New York State governor. Throughout his long political career, Horatio Seymour served as military secretary to Governor Marcy, mayor of Utica, speaker of the Assembly, and an unsuccessful candidate for the U.S. presidency (running against Ulysses S. Grant). As governor, Seymour sparked controversy when he vetoed the Legislature’s prohibition law as unconstitutional.

Seymour has perhaps the most substantial connection to the Adirondacks compared to the other governors. He served as the first president of the State Park Commission in 1872, and was an instrumental figure in the state acquisition of timberlands and the ultimate creation of the Adirondack Park. Professor A. Guyot and Ernest Sandoz may have become the first to summit Mount Seymour in 1870, though their records suggest they may have actually climbed Seward Mountain instead. The first definite ascent occurred in 1872 by Colvin and two guides, who accidentally climbed the peak after losing their way in fog en route to Seward.