Sorry, Peter, it’s the 1861 census, not the 1851.

1861
Ballaugh

Ancestry’s transcription:

Name: Rebecca Quayle
Age: 70
Estimated birth year: abt 1791
Relation: Wife
Spouse's Name: William Quayle
Gender: Female
Where born: Ballavenard, Ireland
Civil Parish or Township: Ballaugh
Country: Isle of Man
Street address: View image
Condition as to marriage: View image
Education: View image
Employment status: View image
Occupation: View image
Registration district: Anglesey
Sub-registration district: Holyhead
ED, institution, or vessel: 2
Neighbors: View others on page
Household schedule number: 50
Piece: 4411
Folio: 20
Page Number: 9
Household Members: Name Age
William Quayle 71
Rebecca Quayle 70
Ann Jones 58
Ann Barr 94
Barney Carval 84
Mary Carval 44
Alex McCullock 69

notes:
This is Wm and Rebecca Quayle, lodging house keepers, with 5 lodgers.

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The place name in Ireland has been written as though it’s a Manx “Balla” rather than an Irish “Bally”. The fifth letter is obscured by a thick black line (an enumerator’s mark added later). The last 4 letters look like “ward”.

Rebecca was 43 when she married Wm Quayle in 1826 which could be why the couple only had one child. Perhaps she was a widow --- maybe she could have been a Mullen / Mullin / Mullan ?

Jean C