Searching for any family/surname that moved to San Mateo County from Audubon Minnesota in l950s-l960s.A family of four would be my relatives.My birth mother was named Diane and was born in Audubon Minn in l942. Her mother was born in l918. My mother worked for rental car agency. Child was given up for adoption l964.My brother's name is GRANT. Searching for Minnesota family relocated to San Mateo county. Thank you.