Looking for a Cook!

Looking at my dads side of the family. His mother my grandma was called Dorothy Annie Hilda Cook. Father called Harry Cook and mother called Emma Jane Cook formally Harris.
In 1903 when Dorothy was born they lived at 25 Ferndale Road Melcombe Regis. I do know that at sometime there was a connection with Chickerell Road. There was a sister called Beatrice and quite a lot of other brothers and sisters.
My Grandma married in 1949 in Bradford West Yorkshire.
I am looking to go back from Dorothy and find information about Harry Cook.
Can anyone help with any information.
Regards
Sue Sykes nee Taylor (granddaughter)