[1] It is not clear why Gilbert really did resign the position of Abbot of Glenluce, head of Glenluce Abbey in Galloway, in order to become a mere brother at Melrose Abbey; nor is it clear for how long Gilbert had been abbot, though his latest known predecessor is attested last on 27 May 1222.

[3] The Melrose Chronicle tells us that "Sir Gilbert, master of the novices at Melrose, and formerly abbot of Glenluce, was elected bishop by the whole people and the clergy on Galloway, excepting the prior and the convent of Whithorn".

[7] Richard Oram and other historians argue that Gilbert was actually forwarded by King Alexander, part of a general effort to impose "Scottish" [i.e. crown] control on Galloway in the aftermath of the annexation of the province following the death of Alan, Lord of Galloway, and amidst the Galwegian revolt of 1235 led by Gille Ruadh.

[8] There proceeded various appeals to both the Archbishop of York and the Pope himself; despite the protests of the canons and their argument about the "illegality" of Gilbert's election, Gilbert secured consecration by Archbishop Walter de Gray at York on 2 September.

[9] An investigation by Pope Gregory IX had already been started, on 9 June, in which the Pope had issued a mandate to the Bishop of Rathlure, the Bishop of Raphoe, and the Archdeacon of Raphoe, authorising them to investigate the legality of Odo's election, and if they found it to have accorded with canon law, to consecrate him as Bishop of Galloway and compel Gilbert to restore everything he had taken; the results of this investigation are unknown, and Gilbert retained his bishopric.