|Reference style||The Right Reverend|
|Spoken style||My Lord or Bishop|
He was born in Keithock, near Brechin, and baptised on 2 April 1698, the son of David Edgar and Elizabeth Guthrie. He was educated at Marischal College, Abedeen from 1712 to 1714. He married Barbara Rait (1692–1774), daughter of the Reverend William Rait, Incumbent of Monikie, and Isobel Yeaman, and sister of the Right Reverend James Rait, Bishop of Brechin.
His first pastoral appointments were as assistant minister (1727–29) and then Incumbent (1729–32) at Careston, followed by as the Incumbent of Arbroath (1732–65); a post he held until his death. After the Jacobite rising of 1745, Edgar was arrested for not praying for King George II but the case dismissed by the local magistrates after he said that he had "prayed for the King".
He was appointed coadjutor bishop of Fife and consecrated at Cupar on 18 October 1759 by Robert White, Primus of the Scottish Episcopal Church, with bishops Falconer, Rait, and Alexander serving as co-consecrators. Following the death of Robert White in 1761, Edgar became Bishop of Fife on 24 June 1762.
- Bertie, David M. (2000). Scottish Episcopal Clergy, 1689–2000. Edinburgh: T & T Clark. ISBN 0567087468.
- Gordon, J. F. S. (1867). Scotichronicon: Comprising Bishop Keith's Catalogue of Scottish Bishops. Volume 2. Glasgow: John Tweed.
- Keith, Robert (1824). Russel, Michael, ed. An Historical Catalogue of the Scottish Bishops: Down To The Year 1688. Edinburgh: Printed for Bell and Bradfute.
|Scottish Episcopal Church titles|
|Bishop of Fife
followed by Daniel Sandford