Frances, I think that these censuses show the family of Graham’s g g grandmother, Isabella Taggart b 1832 Whitehaven.
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1841
Church St, St Bees, Whitehaven

NameAge
Isabella Taggart 37
Isabella Taggart 8
James Taggart 7
Ann Taggart 3

IT 37 mariner’s wife
all b Cumberland

By 1851, Isabella had moved out to be a servant in Whitehaven, James was presumably away at sea, and Ann must have died before the next Ann was born in Jun Q 1845.

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1851
106 Queen St, Whitehaven

Name Age
John Taggart 48
Isabella Taggart 47
Elizabeth Taggart 9
Ann Taggart 6

JT seaman b IOM
IT and ET b Whitehaven
AT b Liverpool

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1861
7 Windmill Brow, St Bees, Whitehaven

NameAge
John Taggert 58
Isabella Taggert 57
Elizabeth Taggert 19
Ann Taggert 16

JT labourer shipping coals b IOM
IT and ET b Whitehaven
AT b Liverpool

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Graham, do you possess a scanned image of the 1826 marriage of John Taggart and his first wife, Ann Waddell, so that we could compare John’s signature with the signature of the John Taggart on the 1851 Masters and Mates Certificate ?

Jean