I am looking for information on the following families located in Hillier, Prince Edward County on the 1881 Census:

Sweet, Judson head b. 1824 US
Minerva wife b. ca. 1831 Canada (Minerva Miller)
Rhoda dau b. ca. 1852 Canada
Mary dau b. ca. 1863 Canada

Degroff, Allen head b. ca. 1848 Canada
Alida wife b. ca. 1854 Canada (dau of Judson and Minerva)
Miloe son b. ca. 1875 Canada
Gertrude dau. b. ca, 1877 Canada
Ida May dau. b. ca. 1880 Canada

Sweet, William head b. ca. 1855 Canada (possible son of Judson and Minerva)
Amanda wife b. ca. 1854 (Mary Amanda Clark)
Florence dau. b. 1881 Canada

Judson Sweet died 1885 and is buried in Riverside Cemetery Napanee, Ontario.
Allen and Alida Degroff are in Waupaca County, Wisconsin 1900 US Census.
William and Amanda Sweet are in Morden, Manitoba on 1901 Census.
Where can I find info on their lives in Prince Edward County? Births, marriages, deaths. etc.?

Thank you, Peggy