Simone Martini
Simone Martini was the brother-in-law of Lippo. After Lippo returned to Siena from Avignon there is little evidence of interaction with Simone Martini. The influence of Memmi's "Assumption" on Naddo Ceccarelli in his "Rebel Angels" (another term for fallen angels) suggests a more direct stylistic connection between the ideas emerging from Lippo's shop and the younger generation of Sienese artists apprenticing under him.