Matilda of Saxony, Queen, Widow - Biographical portrait of St. Matilda. Variants on the saint's name include Mathildis, Maud, and Mechtildis. - http://www.saintpatrickdc.org/ss/0314.htm#mati
Renowned Queen Mother Mathilda - Essay on the ideals and realities of Ottonian queenship in the Vitae Mathildis Reginae. By Anne C. Stinehart. - http://etext.virginia.edu/journals/EH/EH40/steinh40.html
Catholic Encyclopedia: St. Matilda - Biography of the Queen of Germany, wife of Henry I (the Fowler). She died in 968. - http://www.newadvent.org/cathen/10049a.htm