Matilda signed her name to documents after 1141 using such titles as "Mathildis Imperatrix Henrici regis filia et Anglorum domina." A seal described as reading "Mathildis imperatrix et regina Angliae" was destroyed and does not survive as evidence that she described herself as Queen rather than Lady of the English. Her personal seal read "Mathildis dei gracia Romanorum regina" (Matilda by the grace of God Queen of the Romans).

