He married
Isabelle C. McMaster Henry.
John was born at
Chester Co., South Carolina, on 21 September 1803. He was the son of
John Millen and
Martha Moffett. He married
Martha Mary Rosborough at
South Carolina. He married
Martha Matilda Gaston. John was listed as the head of a family on the 1850 Census at
Chester Co., South Carolina. 1850 South Carolina, Chester Co., lists the following family: John Millen, age 46, born in South Carolina; John A. Millen, age 17, born in South Carolina; Margaret Millen, age 13, born in South Carolina; Barbara Millen, age 11, born in South Carolina; Eli H. Millen, age 7, born in South Carolina; Warren H. Watt, age 19, born in South Carolina.. John was listed as the head of a family on the 1860 Census at
Chester Co., South Carolina. 1860 South Carolina, Chester Co., lists the following family: John Millen, age 56, born in South Carolina; Isabelle C. Millen, age 40, born in South Carolina; Eli H. Millen, age 18, born in South Carolina; Isabelle Millen, age 21, born in South Carolina.. John was listed as the head of a family on the 1870 Census at
Lewisville Twp., Chester Co., South Carolina. 1870 South Carolina, Chester Co., Lewisville Twp. lists the following family: John Millen, age 66, born in South Carolina; Isabelle Millen Robert Millen. John died on 18 June 1870 at
South Carolina at age 66. His body was interred in June 1870 at
Chester Co., South Carolina, at Fishing Creek Presbyterian Cemetery.