Hi Lynne,I think Helena was a Cooper before she married a Tibbins!
Marriages Jun 1912
Helena H Cooper married Ernest Tibbins Birmingham vol 6d page 78
Marriages Mar 1923
William Guest married Helena H Tibbins Birmingham vol 6d page 352
Marriages Mar 1945
Ronald W Guest married Joan K Jay Birmingham vol 6d page 373
The father of Ernest Tibbins was Walter,a Brass Dresser,who,interestingly,had become the manager of The White Swan in Warwick Street,with his second wife Elizabeth,in the 1911 census.
Hope this helps!