sentences:  Born to a white woman and man of African descent, Haynes spent his early years in indentured servitude, but was educated by his master and introduced to the Congregational church.He served in the local (Granville, Massachusetts) militia during the American Revolutionary War, after his indenture ended, and was formally ordained as a Congregationalist minister in 1780.His service as minister to the Middle Granville church marks the first known instance of an African-American preacher leading a predominantly white congregation.