This was, however, the end of Courtenay's links with York, whose increasingly tight links with the Neville earls of Salisbury and Warwick led to an alignment with Bonville away from Courtenay. This culminated in the marriage of William Bonville, 6th Baron Harington, Bonville's grandson, to Salisbury's daughter, Katherine. Courtenay did not endear himself to Somerset either, as he and his sons repeatedly disrupted the sessions of the commissioners of the peace in Exeter during 1454/5, which did not assist Protector Somerset in promoting his role as the guardian of law and order. Courtenay was present at the First Battle of St Albans, and was wounded. York however still considered him at least neutral as the Duke's letters addressed to the King on the eve of battle were delivered to the king via the apparently still trusted hands of Courtenay.