- Born April 4, 1815 in Royalston, Worcester County, Massachusetts.
- Parents were SILAS HEYWOOD, Jr. and HANNAH HEYWOOD.
- Married LEVINA PARTRIDGE. Levina was born November 30, 1819 in Dedham, Norfolk County, Massachusetts; and died January 10, 1899 in Holyoke, Hampshire County, Massachusetts.
- He was a merchant in Athol and Holyoke.
- Died November 29, 1884 in Holyoke, Hampshire County, Massachusetts.
- H. EMOGENE HEYWOOD, born August 16, 1846; died in 1916 in Westfield, Hampden County, Massachusetts. Married HERBERT LYMAN on June 3, 1873.
- FRANCIS DANIEL HEYWOOD, born Septembe r28, 1848 in Springfield, Hampden County, Massachusetts; died Jnauary 28, 1816 in Springfield, Hampden County, Massachusetts. Married ISABEL
- WILLIAM HERVEY HEYWOOD, born February 12, 1850; died in 1911. Married CLEMENTIA HAZEN. Married MARGARET NEWELL.
- GEORGE HEYWOOD, born in 1856; died in 1857.
Memorial encyclopedia of the state of Massachusetts, American Historical Society, Boston, 1918. Page 413