I'd imagine that turmoil is major factor for the deficiencies in record-keeping. My father's official birthday is a few months after his actual birthday, becau

I'd imagine that turmoil is major factor for the deficiencies in record-keeping. My father's official birthday is a few months after his actual birthday, because he was born right in the middle of the Japanese occupation of our country. Couldn't get a birth certificate until after WW2 had ended.