1911 help please

[kiterunner]

... but don't use any credits on my behalf! Free searches only please!

Catherine Maud or Maud Catherine BRISTOW, born Islington in 1884, married Frederick Charles WILLIAMS 2nd January 1910 in Shoreditch, London. Catherine's occupation Shop Assistant, Frederick's Porter. Frederick's age was 23. The address given for both of them was 7 Whitmore Road.

On the 1911 census the Crates family are living at that address, Annie Crates being Catherine's mother, but the Williamses aren't there. Can anyone find them? I don't know where Frederick was born but his father was John Thomas Williams, Silversmith, deceased by the time of the marriage, so maybe we can find Frederick on an earlier census with his father to get the birthplace?

I don't know whether Frederick and Catherine had any children by the time of the 1911 census, something I was hoping to find out from the census!

Forgot to say - I don't think they emigrated, because Catherine was a witness at a marriage in Hackney in 1918.