[3] Another uncle, his father's brother, Guillaume de la Mothe, was Bishop of Bazas from 1303-1313, when he was transferred to Saintes, and again from 1318 to 1319.

[7] On 17 August 1313 the Pope granted Gaillard the privilege of visiting his Archdeaconry of Oxford in the Church of Lincoln by proxy, for a period of three years.

In 1336, Gaillard de La Mothe was one of five cardinals, and numerous other prelates and lay persons, who were appointed to revise the Statutes of the Order of Friars Minor (Franciscans).

[11] Cardinal Gaillard de La Mothe also took part in the Conclave of 5–7 May 1342, following the death of Pope Benedict XII (Jacques Fournier).

Pope Clement VI was crowned at the Church of the Convent of the Dominicans in Avignon, on Pentecost Sunday, 19 May 1342, by Cardinal Raymond Guillaume de Fargues, the Protodeacon.

[15] In that same summer, Prince John of France was campaigning against the English in Languedoc and Gascony, and he happened to attack a castle belonging to the nephew of Cardinal de La Mothe.

It ended on the morning of Tuesday 18 December, with the election of Innocent VI (Étienne Aubert, the Bishop of Ostia).

[18] He was crowned in the Apostolic Palace at Avignon on Sunday 30 December by Cardinal Gaillard de la Mothe, the Protodeacon.

[19] On 5 February 1355 Cardinal de La Mothe was present in Consistory along with Pope Innocent VI and twenty other cardinals to discuss the petition submitted by Pierre Bertrand de Colombiers, Bishop of Ostia, to be granted the pallium before he set off for Rome to preside at the Coronation of the Emperor Charles IV.

[21] Of Cardinal de La Mothe Jean Roy remarked,[22] "... it is true that this prelate did not have all the talents necessary to administer advantageously the affairs of the Church and of the Holy See...."