Alexander Research for Family

Hello my grandad Daniel york Alexander,his dad was Wallace w.Alexander
his mom was jennie Cook alexander,grandad married Lola mary upton Alexander i am researching my family tree as far back as i can go.
I hope someone out there can help. I know my grandad was raised
with his grandfather and grandmom and he had twin uncles one of whose
name was alexander Alexander. apprecaite any help! Thank You!!