This looks like the family:

1841
Markinch, Fifeshire:

Name: William Thomson
Age: 45
Estimated birth year: abt 1796
Gender: Male
Where born: Scotland

Civil Parish: Markinch
County: Fife
Address: Eglinton Square
Occupation: Paper Maker
Parish Number: 447
Household Members: Name Age
William Thomson 45
Margaret Thomson 40
John Thomson 18
Frances Thomson 15
Joseph Thomson 12
Margaret Thomson 10
James Thomson 9
Jean Thomson 3

note:
Jean age 3 b Isle of Man

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It seems likely that Margaret was William’s second or third wife.

Mary was a 16 yr old FS in Lonan.

Jean