Hi. I'm not related to this family.I found a death record for Frederick in the Ontario, Canada, Deaths, 1869-1936 and Deaths Overseas, 1939-1947:
Ontario, Canada, Deaths, 1869-1936 and Deaths Overseas, 1939-1947 about Frederick Rodtka Name: Frederick Rodtka Occupation: farmer Death Date: 15 Mar 1924 Death Location: Drydon, Ontario (District of Kenora) Age: 69 Gender: Male, married Born: 12 Feb 1855 Birth Location: Rezenberg, Germany Father: Christian Rodtka, b. Rezenberg, Germany Mother: Lena Walters, b. Sunny Hill, Germany Informant: William Rodtka, son Burial: Dryden, 18 Mar 1924 Cause of Death: Heart failure Archives of Ontario Microfilm: MS935_313
Here is the family in 1901:
1901 Census of Canada about Fred Rodtka Name: Fred Rodtka Gender: Male Marital Status: Married Age: 46 Birth Day & Month: 12 Feb Birth Year: 1854 Birthplace: Germany Relation to Head of House: Head Immigration Year: 1881 Racial or Tribal Origin: German Nationality: Canadian Religion: Lutheran Occupation: Farmer Province: Ontario District: Algoma District Number: 44 Sub-District: Dryden Sub-District Number: N-1 Household Members: Name Age Fred Rodtka 46b. 12 Feb 1854 Germany; farmer Flortenia Rodtka 57b. 28 Feb 1849 Germany Edward Rodtka 20b. 18 Sep 1880 Germany Bertha Rodtka 18b. 21 Mar 1882 Ontario Augusta Rodtka 16b. 24 Feb 1884 Ont. Robert Rodtka 15b. 3 Feb 1885 Ont. William Rodtka 10b. 10 Jul 1890 Ont. Minnie Rodtka 8b. 19 Aug 1892 Ont.
There are 2 other large Rodtka families living very nearby this family.
Here is a birth record for Bertha:
Ontario, Canada Births, 1869-1911 about Bertha Radtke Name: Bertha Radtke Date of Birth: 21 Mar 1882 Gender: Female Birth County: Grey Father's name: Friedrick Radtke Mother's name: Florentine Michaelis Archives of Ontario Microfilm: MS930_4
And for William:
Ontario, Canada Births, 1869-1911 about Frederick William Rodtke Name: Frederick William Rodtke Date of Birth: 26 Jun 1889 Gender: Male Birth County: Grey Father's name: Frederick Rodtke Mother's name: Christina Michaelis Archives of Ontario Microfilm: MS929_93
Here is the family in 1891:
1891 Census of Canada about William Rotykee Name: William Rotykee Gender: Male Marital Status: Single Age: 2 Birth Year: abt 1889 Birthplace: Ontario Relation to Head of House: Son Religion: Lutheran French Canadian: No Father's Birth Place: Germany Mother's Birth Place: Germany Province: Ontario District Number: 68 District: Grey North Subdistrict: Holland Household Members: Name Age Fredrick Rotykee 37b. 1854 Germany; farmer Christina Rotykee 36b. 1855 Germany Edward Rotykee 13b. 1878 Germany Bertha Rotykee 10b. 1881 Ontario Agusta Rotykee 6b. 1885 Ont. Rudolph Rotykee 5b. 1886 Ont. William Rotykee 2b. 1889 Ont.
Here is a marriage for their daugher Minnie:
Ontario, Canada Marriages, 1801-1928 about Wilhelmine Rodtka Name: Wilhelmine Rodtka Birth Place: Sullivan Ont Age: 23 Estimated Birth Year: abt 1891 Father Name: Fred Rodtka Mother Name: Tena Michellas Spouse Name: Arthur George Eccles Spouse's Age: 21 Spouse Birth Place: Almonte Ont Spouse Father Name: Arthur Eccles Spouse Mother Name: Emma Toole Marriage Date: 15 Dec 1914 Marriage Location: Kenora District Marriage County: Kenora Archives of Ontario Microfilm: MS932_309