Gilbert Cavan (died 1420) was a cleric based primarily in Galloway in the early 15th century, a servant of the earls of Douglas and briefly Bishop of Galloway-elect.
[4] A letter from Antipope Benedict XIII in late summer 1400 provided one Gilbert Oliverei, "perpetual vicar of Caerlaverock, to the parish church of Kyrkynner, alias Carnismole".
[6] The letter mentioned that, upon the death of Domhnall, Archibald Douglas, 4th Earl of Douglas, who had the right of presentation, presented Gilbert to Stephen [de Malcavston], Prior of St Mary's Isle, the prelate acting as vicar general of spiritualities in the diocese of Galloway while Bishop Thomas de Rossy was abroad.
[10] Perhaps in compensation, six days later (20 June) Gilbert received provision to the now vacant archdeaconry of Galloway, a position Cavan held only very shortly, for he resigned it on exchange with John Gray sometime before 20 May 1417.
A papal letter of 1406 mentioned that he was "chaplain and familiar" of Princess Margaret, Duchess of Touraine, and tutor to her first-born son, Archibald.