The attribution of the choral work Lacrimae to the composer Pescard (1400-1474) has been regarded as tentative, since it was based on a single treatise from the early 1500' s that named Pescard as the composer  Recently, several musical treatises from the late 1500' s have come to light, all of which name Pescard as the composer of Lacrimae
Unfortunately, these newly discovered treatises lend no support to the attribution of Lacrimae to Pescard, since
the later treatises probably had no source for their attribution other than the earlier treatise