Eason was born on April 3, 1771, and was from Northampton County, Pennsylvania, and was an early settler of Chautauqua County, New York. He first settled in Canadaway (now Fredonia) in the summer of 1803 and built the first home, a log house, in the village on the bank of the creek. In the spring of 1805, he married Margaret Woodside. In 1806, Eason was elected a Fence Viewer along with George Whitehill and Basil Burgess of the Town of Canadaway.[1][3] Eason, along with Perry G. Ellsworth, were the first two commissioner justices in 1806.[4]
Eason sold his farm to Hezekiah Tower in the winter of 1806–1807 and moved to nearby Westfield and purchased land from John McMahan, who had originally purchased a large tract of land from the Holland Land Company in January 1807.[1][3] Eason purchased additional land in April 1810 and February 1811. [5]
In 1811, Chautauqua County formed is own government, and Eason became the county's first sheriff. [1][3] In 1818, Summit Lodge No. 312 of Free and Accepted Masons was formed in Mayville in 1818, and Eason became its first treasurer. The lodge disbanded in 1824. [5]
Eason was a member of the Democratic-Republican Party and was elected to the New York State Assembly and served in the 45th New York State Legislature from July 1, 1821, to January 5, 1822. The election was contested by Isaac Phelps. Eason received 2,226 votes and Isaac Phelps, Junior received 2,275 votes and "Isaac Phelps" received 178 votes, for a combined total of 2,453 for Phelps. It was ruled that Phelps was the winner of the election, and was seated on January 5, 1822. [6]