I know a Michael DeCorsey, born St. Paul MN 2-8-1950. His father was Orren DeCorsey, born MN May 7, 1918; died MN June 12, 1998. Don't know who Orren's father was or where he was born. Orren's wife is Susanne DeCorsey. Her ancestry is Swedish. Orren's is Irish, and before that presumable Norman.