The Life and Death of Richard the Third — Act 4, Scene 5: Lord Derby's house.

Derby meets Sir Christopher Urswick and sends a message to Richmond, explaining that he cannot openly support him because Richard has imprisoned his son George Stanley and threatens to kill the boy if Derby rebels. He asks where Richmond is and learns that he is in Wales, near Pembroke or Harford-west, gathering support from notable men such as Walter Herbert, Gilbert Talbot, William Stanley, Oxford, James Blunt, and Rice ap Thomas. Derby says these letters will show Richmond his position and tells Urswick that the queen has agreed Richmond shall marry her daughter Elizabeth. He then sends him back with his support and farewell.

Sir Christopher, tell Richmond this from me:

That in the sty of this most bloody boar

My son George Stanley is frank'd up in hold:

If I revolt, off goes young George's head;

The fear of that withholds my present aid.

But, tell me, where is princely Richmond now?

At Pembroke, or at Harford-west, in Wales.

What men of name resort to him?

Sir Walter Herbert, a renowned soldier;

Sir Gilbert Talbot, Sir William Stanley;

Oxford, redoubted Pembroke, Sir James Blunt,

And Rice ap Thomas with a valiant crew;

And many more of noble fame and worth:

And towards London they do bend their course,

If by the way they be not fought withal.

Return unto thy lord; commend me to him:

Tell him the queen hath heartily consented

He shall espouse Elizabeth her daughter.

These letters will resolve him of my mind. Farewell.