It would seem her first name is Clara or Clarissa. See census below.
1891 census Sophiasburg PE County SMITH Wm S, 43 Emma, 42 Wm allen, 17 Clara M, 14 Maggie M, 9 Charles E, 10 Emma P, 5 Sarah C, 4 George E, 1
1896 she is married under name Maude.
1901 census Sophisburg PE County NORTEN John P, 20 Oct 1878, Ont Clarisa M, 22 Jan 1879, Ont Harry, 9 March 1894, 7, Ont Cecilia G, 6 March 1898, 3 Purl E Smith, 24 Oct 1886,14[sister Emma P from 1891 census?] She, Pearl, is also on 1901 census with her parents in Belleville.
A Pearl Smith,20, d/o Wm Smith and Emma Cronk, married 24 Dec 1906 in Belleville to Bert Prest. Was hoping Maude may have been a witness but no luck there. Bert Prest crossed into the US going to Detroit, 1918, Wm Smith of Holloway Ont is given as Canada contact.
A Harry E Smith b March 1895, aged 16 is on 1911 census with grandparents Willam and Emma in Belleville. Was he Maude's son before she married Norton? Did not find him on WW1 attestation site.