According to a well researched tree on Ancestry, Ann Clucas was the daughter of William Clucas and Mary Voast/ Vaust. Mary died in 1832 and William remarried to Julia Twiss in 1834.

In 1841 and 1851, Ann was with her Vaust grandfather, while her father and stepmother were also in Ramsey.

1841
Saint Pauls Square, Ramsey

Charles Voast 65 harbour master
Jane 65
Lucy 20
Ann Clucas 10
all b IOM

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1841
Old Cross, Ramsey

Willm Clucas 40 surgeon
Julia 30 b England
Walter 5
William 4

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1851
Quay, Ramsey

Charles Vaust head wid 75 harbour master
Lucy dau unm 32 house keeper
Ann Clucas grand daur unm 20 milliner
all b Ramsey

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1851
Waterloo Road, Ramsey

Ancestry's transcription:
Name Age
William Clucas 50
Julia Clucas 37
Walter D Clucas 14
William H Clucas 12
Louisa Clucas 1
Eliza Sade 24
Jane Johnson 22
Fanne Lord 16

WC 50 surgeon practising b Patrick
JC 37 b England
children all b Ramsey

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Name: Anne Clucas
Gender: Female
Christening Date: 08 May 1829
Christening Place: RAMSEY,ISLE OF MAN,ENGLAND
Birth Date:
Birthplace:
Death Date:
Name Note:
Race:
Father's Name: William Clucas
Father's Birthplace:
Father's Age:
Mother's Name: Mary Vauste
Mother's Birthplace:
Mother's Age:
Indexing Project (Batch) Number: C03827-1
System Origin: Isle_Of_Man-ODM
GS Film number: 106741
Reference ID:

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Name: William Clucas
Birth Date:
Birthplace:
Age:
Spouse's Name: Julias Twiss
Spouse's Birth Date:
Spouse's Birthplace:
Spouse's Age:
Event Date: 16 Dec 1834
Event Place: Ramsey,Isle Of Man,England
Father's Name:
Mother's Name:
Spouse's Father's Name:
Spouse's Mother's Name:
Race:
Marital Status:
Previous Wife's Name:
Spouse's Race:
Spouse's Marital Status:
Spouse's Previous Husband's Name:
Indexing Project (Batch) Number: M03827-1
System Origin: Isle_Of_Man-ODM
GS Film number: 106741
Reference ID:

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I can't see a marriage in the IGI for William Clucas to Mary Vaust.

Jean C