Looking for Ancesters of Joshua Millard and His Parents He was Marri

Looking for ancesters of Joshua Millard and his parents. He was married to Lydia McLean one story has him born in 1791 in Schoharie county hoever, on checking with Scoharie Co., they have no Millard's there at that time. also trying to find Lydia McLean's line have been stuck for over a year.