Colonel Francis Hacker was an English soldier who fought for Parliament during the English Civil War and one of the Regicides of King Charles I of England.

Thomas Grey, Lord Grey of Groby, was an elected Member of Parliament for Leicester during the English Long Parliament, an active member of the Parliamentary party and a regicide. He was the eldest son of Henry Grey, 1st Earl of Stamford, using his father's as his own courtesy title, and Anne Cecil, daughter of William Cecil, 2nd Earl of Exeter.