If there are other children for this couple I do not know about them. John and Israel were supposed from later records of their descendants.
1820 Ohio, Trumbull County, Canfield Township
Mathias Boyer 1 male under 10, 1 male 16-26, 1 male 26-44, 1 female under 10, 1 female 16-26
14941830 Ohio, Trumbull County, Canfield Township
Mathias Boyers 1 male 5-10, 1 male 10-15, 1 male 40-50, 1 male 60-70 (Could be Daniel Fink living with daughter Barbara); 1 female 10-15, 1 female 30-40
1495 1840 Ohio, Trumbull County, Canfield
Matthias Boyer 1 male 50-60
1850 Ohio, Mahoning, Canfield
dwelling 491, family 491
Israel Boyer, age 27, male, farmer, real estate $550, born Ohio
Susan -------, age 19, female, born Ohio
Matthias----, age 68, male, born Pennsylvania