Horace Ambler 1917-1975/David Ambler 1949-1981

I am looking for what may be left of my Ambler Family. I have very little information. My Father was David Ambler born in 1949 died in 1981. His Father was Horace Ambler born in 1917 and died in 1975. I do not know his mothers name but I do know she died in 1949. My family is from Philadelphia Pennsylvania.I know my father David had another daughter from a previous marriage, Kimberly Ambler later adopted and became Kimberly Campbell. He had one full blood brother Dennis Ambler and one full blood sister Joyce Ambler (maiden name) If anyone has ANY information please let me know.