Thanks so much for getting back to me.
I tried going back to the 1911 census looking for an Ellen and James Orr in Co. Antrim. I found one on Hillman St,, Dock Ward, Co. Antrim.
XXXXX XXXXX Orr 32 M Head married 3 years marine engine fitter born Belfast City
Ellen Orr 30 F Wife 0 children 0 living born Co. Down
Mary Pue 16 F Visitor b Co. Down
XXXXX XXXXX 41 M Boarder married 14 years b Co. Antrim
XXXXX XXXXX Orr, age 29, bachelor, ofXXXXX son of Robert Orr, book keeper,married Ellen Pue, age 27, spinster, ofXXXXX, daughter of Robert Orr, stonecutter, 24 DecXXXXX Anne's (COI), Belfast, Co., Antrim.
XXXXX XXXXX Orr was born 14 Apr 1878 and baptised 11 May, in Belfast, Co. Antrim, son of Robert Orr and Sarah Ann Slane.
The only online birth registration for a child of XXXXX XXXXX Orr and Ellen Pue was for a Joseph Orr b 27 Jan and baptised 17 Feb 1919. That makes me wonder if it is the right James and Ellen Orr since you didn't mention a son named Joseph. In any event, it is the only James and Ellen I found.