From findagrave.com:
John was born to Rev John and Love Sanborn Graham,
John's mother died when he was four years old and he was raised by his step mother Abigail Chauncey.
John graduated from Yale University in 1740, and was the first pastor of West Suffield, ordained by his father John Sr. His congregation gave him a house and 32 acres of land and he was paid L50, half in produce and 40 cords of wood a year.
John married Mary Sheldon in 1748 in Connecticut, and raised seveteen children. In 1756 John replaced his father as chaplin for the second expeditionary force to Crown Point, in the French and Indian War. His journal recounts the horrors and wicked ways of the men he served with. Later journals record hundreds of deaths from Yellow Fever. By the age of 34 he was chronically ill. Upon his death 74, he left no will and his property was divided equally between his second wife Ruth and eleven children.