Arthur Watts or Watterson, Anne Watts married to William Watterson was the daughter of David Watt(s) & Jane Qualtrough.
Anne's birth was 21 Feb 1821 Rushen, not listed on IGI records - family member looked up birth when on the Isle, not a confirmed record
I do not have the parents for the above William Watterson or birth / christening record. - marriage to William was 22 May 1858 Rushen
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1841 Census - Rushen
Class: HO107; Piece 1465; Book: 11; Civil Parish: Rushen; County: Isle of Man; Enumeration District: 3; Folio: 41; Page: 12; Line: 12; GSU roll: 464357.
David Watt (1771) age 70 Ireland
Anne Watt - daughter (1821) age 20
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1851 Census -
Class: HO107; Piece: 2526; Folio: 334; Page: 29; GSU roll: 105992-105996.
David Watts (transcribed as Walls on Ancestry) 80 born Ireland beggar
Anne - daughter age 18
Henry Watterson - grandson age 3
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William Watterson & Anne Watt(s) also had 3 illigit children:
Henry Watt christened 2 Jan 1848 ,William Watt christened 15 Jun 1851 & Elizabeth Watt christened 6 Sep 1853 all in Rushen (am guessing that Elizabeth Watt died 5 Nov 1853, not listed on 1861census - see note below also for reference from Brian Lawson index of Burials)
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1861 Census - Rushen
Class: RG9; Piece: 4430; Folio: 45; Page: 11; GSU roll: 543281.
William Watterson - age 40 (1821) Fisherman
Anne (Watt) Watterson - wife age 40 (1821)
Henry Watterson - son age 13 (1848) christened as Henry Watt 2 Jan 1848
William Watterson - son age 10 (1851) christened as William Watt 15 Jun 1851 IGI
James Watterson - son age 2 (1858) christened 19 Sep 1858 IGI
Arthur Watterson - son age 1m (1860) christened 7 Apr 1861 IGI
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Henry Watterson married Jane Kelly 14 Mar 1868 Rushen, have not looked for parents of Jane yet
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1881 Census - Rushen
Class: RG11; Piece: 5609; Folio: 92; Page: 19; Line: ; GSU roll: 1342348.
Henry Watterson - age 34 Married Fisherman on Boat Elizabeth
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1881 Census Rushen
Class: RG11; Piece: 5609; Folio: 7; Page: 8; Line: ; GSU roll: 1342348.
Jane (Kelly) Watterson - age 35 Fishermans wife
Henry Watterson - son age 12
Anne Watterson - son age 8
Isabelle Watterson - son age 5
Jane Kelly - mother age 76 widow
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1891 - Rushen
Class: RG12; Piece: 4692; Folio 33; Page 14; GSU roll: 6099802.
Anne (Watt) Watterson - age 70 widow
Arthur Watterson - son age 30
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1891 - Rushen
Henry Watterson - age 43 Fisherman
Jane (Kelly) Watterson - wife age 45
Henry Watterson - son age 22 Christening not found yet on IGI
Annie Watterson - daughter age 16 christened 4 Jun 1874 Rushen parents Henry Watterson & Jane Kelly
Isabella Watterson - daughter age 15 christening not found on IGI
There also is a Elizabeth Watt(s) burial record of 5 Nov 1853 age 6m on Brian’s Burial Index (not listed on IGI records) not sure if it is daughter of Edward Watt & Isabell Kenaugh or Anne Watt & William Watterson., am guessing William & Anne
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Tim