In all the extant sources but the Libroni this motet is transmitted following the motet "O genitrix gloriosa" (see [III.6]). According to WARD 1986, 511-512, "O genitrix gloriosa" and "Ave virgo gloriosa Maria mater gratiae" are two separate compositions (and not a motet divided in two parts, as in FINSCHER 1954, 209-214 and in the CMM edition), as indicated by the absence of custodes between them in all but one source (Motetti A). RIFKIN 2003, 263, points out that the oldest source in which these two motets are paired is I-Fr Ms. 2794, "a source written at or near the French royal court, very probably between 1486 and 1488". SCHMIDT 2017, 26, adds that "The piece had thus reached the French court by the 1480s, possibly brought there by the composer himself; by this time it had emancipated itself from the Milanese tradition and had become a proper motet". The attribution to Richafort of "O genitrix gloriosa" in DK-Kk 1848 has to be discarded, because of the late date of this source (Ludwig Finscher, s.v. "Compère, Loyset", in "MGG Online").