HILLEGAS: Michael Hillegas and his Descendants 1891By Emma St. Clair Whitney A memoir of the public and private life of Michael Hillegas, who lived from 1729 to 1804. This is a sketch of his life and services, facts and records relating to his personal history and his connection with public affairs, especially during the Revolutionary War. In addition to the memoir is a genealogy, his line of descendants. He was born in Philadelphia, PA, his parents were Michael and Margaret Hillegas, natives of