Other names for Maud were Matilda Stanley and Matildes Stanley.
Source: Glenda Turcks http://wc.rootsweb.com/cgi-bin/igm.cgi?op=DESC&db=nanatea&id=I33919
Source: The Baronetage of England by E. Kimber and R. Johnson, London, 1771, vol. 2 (courtesy of books.google.com), p. 206 has "William, his son, lord of Stanley, &c. living 26 Edw. III, married Alicia, daughter of Hugh Massey, de Timperly, sister to Sir Hamond Massey, Knt. and had issue by her William de Stanley, lord of Stanley, &c. living 10 Rich. II. Henry, Matildes, and John."