my name is ray porterfield. I was born in 1954 in san francisco. my family was from oakland, ca. my father was alvin porterfield of oakland. I believe his father was from southern california. possibly los angeles. can anyone help me. I also have a half brother by the name of Clark who was born in the late 60's in oakland. any help with his wearabouts? My other siblings are my brother Scott, my half brother Jamie, my half sisters Whitney and Christie. I am most interested in where my grandfather came from and where Clark might be. thank you.