| | Frederick Arthur Watson 1879–1950 Maria May Smith 1885–1965 | | | | Helena Collin Blackett 1847– | | | | | | | | | Margaret Collin or Tinckler (see note) 1792–1832 Margaret Dalton 1806–1880 | | |
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| | | Joseph George Smith 1859–1930 Charlotte Fanny Blackett 1858–1913 | | | | | | | | | Margaret Collin or Tinckler (see note) 1792–1832 Margaret Dalton 1806–1880 | | |
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