Besides his middle child, Philippe, he left an elder son, Girard (Gérard), who succeeded him as sire, and a daughter, Péronelle, his children by first wife, Marie.
This was widely discredited until 1981, when Bernard Gicquel rejuvenated the hypothesis that aspects of Willehalm were derived from Jehan and from the hastilude sequence at Ressons in La Manekine.
Sylvie Lécuyer in her edition of Jehan et Blonde (Paris, 1984), refused to use "Philippe de Beaumanoir" of the author in order to avoid linking him with the jurist, his son.
Philippe wrote some 20,000 verses of poems and two romances, La Manekine and Jehan et Blonde.
Among Philippe's most studied works are his nonsense poems called Fatrasies and Oiseuses.