[1] He was born in Wales and educated at Brasenose College, Oxford[2][3] and awarded Doctor of Divinity (D.D.)
[4] He was made pro-vice-chancellor of the university the following year; and also appointed Dean of Clogher.
[5] Roan was chaplain to James Margetson, Archbishop of Armagh, who appointed him Bishop of Killaloe.
His tomb is inscribed: "Hic jacet corpus Joannis Roan, S.S. Theologiae Doctoris, Laonensis Episcopi, qui obiit 5° die Septembris, A.D.
(Here lies the body of John Roan, DD and Bishop of Killaloe, who died on 5 September 1692)[7]