Hi Ian,

The 1911 census Household Transcription on Findmypast has:
CROWE, John W Head Widower M 43 1868 Railway Labourer Isle of Man Bride
CROWE, Isaballa Daughter F 14 1897 School Isle of Man Lazayre
CROWE, Constance Daughter F 6 1905 School Isle of Man Michael
Address:
Ballagawne Michael Isle of Man
RG14 Piece:34731 Ref: RG14PN34731

I had trouble getting the actual scan to load further than halfway, so I can't see whether he entered number of live children compared to total number born, or whether that was only given for a living wife.

There is a John Crowe aged 10 b."Lezare", a patient at The Cottage Hospital Ramsey.

There is a Katie Crowe aged 12 b.Peel at House Surgeon Nobles I O M Hospital Douglas.

Brian's burials have CROWE, Mary Jane 33 Michael 17 Feb 1909.

Sue