Leland Rosencrance

Hi, my maiden name is Rosencrance. My family and I are looking for any information we can find on a LELAND ROSENCRANCE. His DOB was 1940 and he was either born in Illinois or West Virginia. The family lost track of him some 45+ years ago, and we believe he is now deceased, but not sure. His mother and father were Emma L. Sullivan and Floyd Orel Rosencrance. He had two brothers and one sister: Floyd E. Rosencrance (my father), Howard E. Rosencrance (deceased) and Evelyn (Rosencrance)Williams. Any information that anyone could give me on how to locate info. or if you know of my family please leave a message on here. The last anyone knows of his (Leland's) where abouts is a Florida prison where he served sometime for vechile theft (?) and was released (do not know the year). My Grandparents, Emma and Floyd moved from the WV area to Kincaid, Illinois where Floyd was a coal miner. Do we sound familiar to anyone? Thanks for your time.