Eric I have been doing genealogy a very long time, I will give you some advise, hopefully it will help. Where were your parents born? when? can you get a birth certificate on each? , as it will list their parents names. Where was your grandfather Ernest born? died? Married ? where? divorced from Mary Garber ?You always need to list dates if known, places if known,,,,if you can write to me at my home address I may be able to help you a little, I am doing genealogy on the Garbers, however most are in VA.I live in WA.
Is this your dad by chance??
California Birth Index, 1905-1995 About John Allen Leaf Name: John Allen Leaf Birth Date: 7 Mar 1949 Gender: Male Mother's Maiden Name: Garber Birth County: Santa Cruz