What is "architrenius"

Architrenius is a medieval allegorical and satirical poem in hexameters by Johannes de Hauvilla (also known as Johannes de Altavilla or Jean de Hauteville). The poet was born in about 1150 (perhaps at or near Rouen) and died after 1200, and dedicated the work to "Gualtero, archepiscopo Rotomagensium" ( Walter de Coutances, Archbishop of Rouen). The work was popular among the humanists of the 16th century, perhaps as much for an allegorized but frank description of feminine "charms" in the last section, as for anything else. "Architrenius" is also the name of the poem's protagonist.