Sources & Information:
The birth date of Frederick Lincoln was taken from a newspaper article that a relative had but it is not know what happened to this newspaper article.

Family Group Record <familysearch.org> as of 24 May 2003.

Individual Record <familysearch.org> as of 24 May 2003. 1880 United States Census, Fredk. LINCOLN, male, birth <1843>, birthplace Canada, Age 37, Occupation Fisherman, Marital Status <married>, Race <white>, head of Housefhold Fredk. LINCOLN, Father & Mother's birthplace England.
Source Information: Census Place Alpena, Alpena, MI. Family History Library Film 1254570, film No. T9-0570, page 491A.

Household Record: 1880 United States Census.
Fredk. Lincoln, self, male, age 37 born Canada, Fisherman.
Sarah Lincoln, wife, female, age 33, born N.Y., Keeping House.
David Lincoln, son, male, age 12, born Mich., At School.
Annie Lincoln, dau, female, age 11, born Mich., At School.
Alice Lincoln, dau, female, age 2, born Mich., At home.
Phebe Ellsworth, Other Relation, single, female, white, age 26, born N.Y.,
Servant, Father's birthplace N.Y., Mother's birthplace Ireland.