Hi Liz,
It sounds as though your friend has been looking at the 1881 census:
Robert CRELLIN Head M Male 27 Isle of Man, England Police Officer
Anne CRELLIN Wife M Female 27 Isle of Man, England Wife
Robert S. CRELLIN Son U Male 5 Isle of Man, England Scholar
Margaret J. CRELLIN Daur U Female 3 Lpool, Lancashire, England Scholar
Mary E. CRELLIN Daur U Female 1 Lpool, Lancashire, England Infant
Margaret CLUGSTORE Mother In Law W Female 63 Isle of Man, England Laundress
Isabella WATTERSON Visitor M Female 57 Isle of Man, England Dressmaker
Annie KELLY Visitor M Female 30 Isle of Man, England Dressmaker
George WORTH Lodger M Male 48 West Riding, York, England Weight Taker
Sarah WORTH Lodger M Female 40 Lpool, Lancashire, England Dressmaker
Joseph WORTH Lodger U Male 17 Lpool, Lancashire, England Baker
Source Information:
Dwelling 26 Enid St
Census Place Toxteth Park, Lancashire, England
Family History Library Film 1341872
Public Records Office Reference RG11
Piece / Folio 3640 / 68
Page Number 55
I can't see a marriage for them in the IoM. Perhaps in Lancs?
Sue