[Grove Music Online]: Misattribution to Maistre Jhan in Rvat C.G.XII, 4 and C.S.17 but by Jacquet of Mantua
V-CVbav-ms-Capp.Giulia.XII,4: Composer name in ms (index) = 'M[aistre] Jan' / Composer name in ms = 'Maistre ian'
V-CVbav-ms-Capp.Sist.17: Composer name in ms (index) = 'Maistre iehan' / Composer name in ms = 'Maistre Johan' / Title as in ms (index) = 'Ave regina'
