following on aghadowey's helpful points i looked and found
In the 1901 census, a Martha Ellen Sinnamon b Co Down aged 22, is working as a housemaid for the Paul family in house ref 23 in Edenderry (Portadown Urban, Armagh) is this the right person? I could throw no light on the Sinnamons except noting that Ros Davies website combines her entries for Cinnamon etc with Sinnamon
In the Ulster Historical Foundations website [which has a free index before requesting detail and therafter membership or buying creditd etc ]
www.ancestryireland.com/quis there is an entry for a Sinnamon marriage
SINNAMON MARTHA ELLEN 1910 THOMAS Antrim
Also under Thompson marriages are
THOMPSON THOMAS 1910 THOMAS Antrim
THOMPSON THOMAS 1910 JAMES Antrim
THOMPSON THOMAS 1910 WILLIAM Down
THOMPSON THOMAS GEORGE 1910 JOHN Down
THOMPSON THOMAS JAMES 1910 ANDREW Antrim
www.emeraldancestors.com/search/marriages have two similar entries for George Thompson marriages which is curious. Eg a typo or ?
1910 George THOMPSON marries Martha Ellen XXXXXXXX Belfast
But just one for 1910 George XXXXXXX marries Martha Ellen SINNAMON Belfast Antrim
Lennon wylie.co.uk website for the 1910 street directory doesn’t list a George Thompson or Thomson as a cafe manager, it does list about 10 George Thompsons I tried familysearch.org and got bogged down and couldnt finish it.
I don’t think I can offer anything ele, good luck, Jim