Daniel appears in the 1871 census (heads of households only online) for Ontario but I don't find him in 1881 census.
ST JOHN, DANIEL M
Sex: Male
Age: 40
Place of Birth: Ontario
Religion: Wesleyan Methodist
Origin: WELCH
Occupation: Farmer ( F)
District: LINCOLN (021)
Sub-district: Grimsby (F)
Division: 2
Page: 71
Microfilm reel number: C-9923
Reference: RG31 — Statistics Canada

Arthur & Nettie show up in the 1901 census.
8 16 102 Griffin Arther E M Head M Feb 11 1867 34, b. ON r, WELCH [sic], Methodist, painter
8 17 102 Griffin Nettie C F Wife M Jun 13 1876 24, b. ON r, French
8 18 102 Griffin Eva L F Daughter S Jun 4 1896 4, b. ON u
8 19 102 Griffin George P? M Son S Nov 22 1897 3, b. ON r
8 20 102 Griffin Sara M F Daughter S Jul 14 1899 1, b. ON r
1901 Census of Canada
Subdistrict: Grimsby (South/Sud), WENTWORTH (South/Sud), ONTARIO
District Number: 128
Subdistrict Number: i-1
Archives Microfilm: T-6506


1911 / Ontario / LINCOLN / 31 Louth / page 6
All English, Methodist
35 69 Griffin Aurthur E M Head M Feb 1867 44, gen. merchant in retail
36 69 Griffin Nettie F Wife M Jun 1875 35
37 69 Griffin Lena F Daughter S Jun 1895 15
38 69 Griffin George M Son S Nov 1897 13
39 69 Griffin Sadie F Daughter S Jul 1899 11
40 69 Griffin William M Son S Sep 1901 9
41 69 Griffin Pearl F Daughter S Oct 1904 6
42 69 Griffin Ruby F Daughter S Mar 1907 4
43 69 Griffin Reta F Daughter S Jul 1909 1

This may be mother Sarah in the 1911 census.
All born Ontario, all Methodists, all English.
1911 / Ontario / LINCOLN / 27 Grimsby South / page 4
46 40 St John Albert E M Head M Oct 1863 47, farmer
47 40 St John Annie J F Wife M May 1871 40
48 40 St John Harley. A M Son S Apr 1902 9
49 40 St John Alice E F Daughter S Feb 1898 13
50 40 St John Evylan. C F Daughter S Sep 1909 1
1 40 St John Sarah F Mother W Jan 1834 77

I can't seem to find this family in the 1901 census although they ought to be in LINCOLN, one imagines.