Looking For Birth Mother,Formally Baby Boy Ziemann given up for adoption February 17, 1968 at Granada Hills Hospital. Mother's birthmothers maiden name was Bates. Just found out this information this year. My husbands Mother Died December 2007. Any information would be greatly appreciated. My husband had a wonderful childhood & was extremely close to his mother. His father is still living. We reside in Mid-Wilshire Area of Los Angeles.