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.
During his time, he received papal provision to be Bishop of Galloway, but refused to accept the position.
The reasons for this change are not clear, but Thomas never became a consecrated Bishop of Galloway nor did he ever attain another bishopric.
Bishop | bishop | Bishop (Catholic Church) | Bishop of Winchester | Bishop of London | titular bishop | Bishop of Durham | Bishop of Ely | Titular Bishop | Metropolitan bishop | Bishop of Lincoln | Bishop of Chester | Bishop Auckland | Galloway | Dumfries and Galloway | Bishop of Exeter | George Galloway | Bishop of Rochester | Bishop of Llandaff | Titular bishop | The Case of the Stuttering Bishop | Bishop of Meath | Bishop of Bath and Wells | Stephen Bishop | metropolitan bishop | Elizabeth Bishop | Bishop's Stortford | Bishop of Norwich | Bishop of Hereford | Bishop of Chichester |
Before becoming Bishop of Galloway (or Whithorn), he had also held the parish church of Nelbland, probably Newlands in the diocese of Glasgow, which is mentioned in papal documents because it became vacant upon Spot's accession to the bishopric.