De la Broce was from a family of petty nobility in Touraine, and was the royal physician (by 1255) and chamberlain (by 1266) for Louis IX.
[1] After Louis' death in 1270, de la Broce quickly became a favorite of the new king.
He accumulated a substantial fortune, built from Philip's largess and from gifts from those hoping to cultivate his influence with the king.
No trial was held, and the evidence was apparently suppressed, so the contents of the letters are unknown.
De la Broce appears in Dante's Purgatory, in Canto VI, with the other spirits of those who, though redeemed, were prevented from making a final confession and reconciliation due to having died by violence: