1) A set of thirty requiem masses, to be said on one day or over a succession of days.
1392 pro uno trentali missarum celebrandarum in ecclesia’ mea’ parochiali ... xvs, York
1454 I wyll bedon for my sawle iij trentawls of the Fadyr and Son and Holy Gost, Hull
1521 I wytt xiijs iiijd ... to cause oon trentale of messys to be sayd for my husband and me, Harrogate
1542 I wyll that thar be one tryntall of messes doyne... for the heylthe of my soulle, Grinton.