looking for Shawn

Hi, i'm looking for my brother who was adopted by a jewish family ( we think the dad was a doctor) in the Chicago area. His birth name was Shawn Edward Guth. I am one of his sisters. I am an identical twin too, so he has twin sisters looking for him. He was born on May 5, 1970, we believe. At St. Francis hospital in Blue Island, Illinois. He was 6 months old when our mom had to give him up. If you are Shawn, please contact me. We love you. Love your twin sisters...Tiffany and Heather:D