Im looking for family/decendants of Robert Watson Gladstone born 1873 he was a hairdresser

Robert Married Margaret Coulson in 1895 Gateshead.
They were my great grand parents, their daughter Mary Elizabeth known as Polly was my grandmother.

I have loads of information on the Gladstones , but i was wondering if they were related to William E Gladstone. love any help

regards carole cross (parker)