he didn't change it to Hill, it was misread by the person transcribing the census, if you look at the photo it is Thos. or Tho C Flann
Gladys Jane Flann birth cert has father as Thomas C Flann and Jane Gillard but transcribed by someone as Thomas Cumberne and Jane Hoskins
Robert birth list him as Thomas Camban Flann
I am not related , just helping out
go to this BC site (free) for FLANN info
http://search-collections.royalbcmuseum.bc.ca/Genealogy/Basi...put FLANN in the last name search box and all info related to FLANN will come up
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there are GILLARD's in Yale district in the 1901 census
Gillard Edwin M Head M Nov 18 1847 53
Gillard Susan F Wife M Jan 18 1846 55
Gillard Martha F Daughter S Jan 13 1877 24
Gillard Edward M Son S Jun 12 1883 17
Gillard John Henry M Head, son of 1 M Nov 9 1871 29
Gillard Alice Maud F Wife M Feb 16 1874 27
another family
Gillard Leon M Head M Sep 27 1873 28
Gillard Josephine F Wife M Aug 6 1884 16
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found this on an on line tree
Esther Marie Gillard
[Este Gillard]
Birth: 09 Nov 1881 (9 Nov 1881) - Thunder Bay, Canada
Death: 03 Apr 1959 (3 Apr 1959) - British Columbia, Canada
Marriage: 14 Sep 1899 - Yale, British Columbia, Canada
Spouse: Edwin Douglas Lordly Webber
Spouse Thomas Wellman in1907
F: Edward Gillard
M: Susan Hoskins
1891 census
Calgary , The Territories
Edwd Gillard 45
Susan Gillard 45
Jane Gillard 22
John Gillard 19
Eliz Gillard 15
Este Gillard 10
Edwd Gillard 7