I mentioned son Albert in 1939, who has Stanley Smith living in his household. Who is also with this family in 1921
This is the 1921 info for Mary Ann Smith living Cambridgeshire with husband George William Smith
Name Mary Ann Smith
Gender Female
Marital Status Married
Age 49 Years 4 Months
Relation to Head Wife
Estimated Birth Year 1872
Birth Place Lincoln, Lincolnshire, England
Residence Date 1921
The 1911 has different details for wife Mary Ann bc 1888, nee Bays
So George William Smith died between 1921 - 1939
Cas
Many thanks Cas and PatLac for your replies, really grateful for your continued help and interest

You are quite correct Cas regarding reply #25, sincere apologies but I missed that amongst all the interaction that was going on.
Unfortunately, I do not have subscription to Ancestry but will attend the local library at the next convenient time to access their version of FindMyPast. I now have the census details you supplied in your reply so downloading a copy from their resources should be straight forward.
I already have a copy of the 1911 census for Mary Ann Parfery, she is listed as a 41 year old Widow living at Swing Brow, Chatteris with her 6 children. Listed as Home Duties but Not Known where born.
Not sure about the 1888 and nee Bayes you mention in your reply though. The Mary Ann I am looking for was Tabor before Parfery and born circa 1870.
Steve