David Woods - Woods family

I am looking for information about David Woods, husband of Mary Richie, according to information passed down from my ancestors. Mary was probably born 1772-1802. His son, David Woods, was born April 17, 1818 in Allegheny County, PA. He married Leah Eckels, born June 25, 1820 in Sewickley,Allegheny County, PA. The David I am searching for was probably born 1763-1800. Mary Richie was probably born 1772-1802. David was probably of Irish heritage, although English or Scottish heritage is a possibility. David or his ancestors probably arrived in Philadelphia, PA.