[Nugent 1993]: 'Parvus names Alexander Lonck as composer of the Missa sine nomine. [...] The dictionaries are silent about Lonck and Parisius. The two masses in VatS 54 may be the only surviving works by these two composers whose dates and nationalities are unknown.'
V-CVbav-ms-Capp.Sist.54: Composer name in ms = 'Alexandri Lonck' / [Contratenor] and [Bassus]: 'Domine fili tacet' / Osanna is missing on empty fols. 21v-22r /
