- Born in 1847 in Springfield Township, Erie County, Pennsylvania.
- Parents were ALONZO GEORGE BLACKMER and CATHARINE PERRY.
- Married EMMA JANE BOYD in 1869. She was born in 1844 in Wattsburg, Erie County, Pennsylvania; died in 1922 in Erie, Erie County, Pennsylvania. Her parents were HANS WILLIAM BOYD and SALLY ANN ROBBINS.
CHILDREN
- ALICE BLACKMER, born in 1870 in Erie County, Pennsylvania; died in 1877.
- EARNEST ELMER BLACKMER, born in 1872 in Erie County, Pennsylvania. Married ALTA MAY BRAND.
- LOTTIE BLACKMER, born November 23, 1873 in Corry, Erie County, Pennsylvania; died December 11, 1940 in East Moline, Rock Island County, Illinois. Married FREDERICK MOON.
- FLORENCE BLACKMER, born in 1874 in Erie County, Pennsylvania.