 Lawrence II was considered a faithful confidant of Ladislaus IV and his mother, Dowager Queen Elizabeth the Cuman.According to a list of merits, issued by her in 1290, Lawrence usually "selflessly made his property available to the king" and negotiated in abroad at his own expense as an envoy of Ladislaus on several occasions.He was made Master of the treasury in December 1279, when Ladislaus IV imprisoned papal legate Philip of Fermo and reorganized the royal council in order to fill the dignities with his loyal partisans.