Searching For Birthmom/Birthfamily

I was born January 14, 1965 in Winchester, Virginia at Winchester Memorial Hospital, and was adopted at approx. 7 days old. I recently found out that my birthmother's name is Dorothy and her last name may have been Funk at the time I was born. Only thing I know about my birthfather is his nickname may have been "Punch".I may have a couple half-sisters, and maybe a half-brother. They would probably be at least in their 40's, and may have the last name of Duncan. Been wondering about my birthfamily all my life, and recently found that I'm ready to try to search for them.One other thing, my birthmother was apparently in a bad car accident at one time, but I don't know when or where exactly.