William Michael Crawford

Looking for my uncle,William Crawford, born 4th july 1945 in Belfast.
His Mother Bridget (nee Kinsella) was Catholic,and his Father George was Protestant.He was sent to his Aunt Jean at 19, Arundle Street, Belfast to be raised as Protestant.
My mother,Gloria van Zanten (nee Crawford) last saw him when he was approx.20 years old.
If anyone has any info please contact me.Thanks.