Fig. 755.—Arms of Thomas Stanley, Earl of Derby (d. 1572); Quarterly, 1. quarterly, i. and iiii., argent, on a bend azure, three bucks' heads caboshed or (Stanley); ii. and iii., or, on a chief indented azure, three bezants (Lathom); 2 and 3, gules, three legs in armour conjoined at the thigh and flexed at the knee proper, garnished and spurred or (for the Lordship of Man); 4. quarterly, i. and iiii., gules, two lions passant in pale argent (for Strange); ii. and iii., argent, a fess and a canton gules (for Wydeville). The arms on the escutcheon of pretence are not those of his wife (Anne Hastings), who was not an heiress, and they seem difficult to account for unless they are a coat for Rivers or some other territorial lordship inherited from the Wydeville family. The full identification of the quarterings borne by Anthony, Lord Rivers, would probably help in determining the point.
<bdi><a href="https://en.wikipedia.org/wiki/en:Arthur_Charles_Fox-Davies" class="extiw" title="w:en:Arthur Charles Fox-Davies"><span title="British writer (1871-1928)">Arthur Charles Fox-Davies</span></a>
</bdi>
A Complete Guide to Heraldry.