Ginn was born in
Orland, Maine, on February 14, 1838, into a
Universalist farming family who were descendants of early settlers of Maryland, Virginia, and Salem, Massachusetts. He attended
Westbrook Seminary, a Universalist preparatory school. Forgoing the ministry, he enrolled instead at
Tufts University in 1858. He graduated from Tufts with a Bachelor of Arts degree in 1862, receiving his Masters of Arts at the same time. After graduation, Ginn had a successful career selling schoolbooks. In 1868, he founded
Ginn & Company and
Athenæum Press, which became a leading American
textbook publisher. The company was later known as Ginn and
Heath. Ginn married twice, fathering six children. In his late 50s, Ginn turned his focus to philanthropy: the American
peace movement was his primary concern. Ginn died on January 21, 1914, at his home in
Winchester, Massachusetts, after suffering from a paralytic
stroke and
pneumonia a month earlier. A library is named after him at Tufts's
Fletcher School of Law and Diplomacy. ==Peace movement==