James, in addition to being a farmer, acted as Justice of the Peace, and later became the Representative for Ontario county at the State Legislature at Albany. During the War of 1812, he temporarily left the Legislature to raise a company of volunteers, of which he became their Captain. During the war, his company, under General Smith, fought the British on both sides of the Canadian border. On one occasion, he found himself opposite his cousin John Rosebrugh, then fighting for the English Crown. After the war, he returned to the Legislature. When Livingston county was formed, James became their first Representative. He was also County Judge and later, Surrogate.
James and Margaret had a total of seven children and thirty-one grandchildren. He was preceded in death by two of his daughters, Jane, wife of William Leaming in 1833, and Margaretta, wife of Nathaniel Baldwin in 1840. James died at his home on Groveland hill on November 18, 1850, at age 83. He was buried nearby at the family plot at Glenwood Cemetery, surrounded by members of his family.
James Edward Fina,