| CAVALIERS | Opponents of the Roundheads in the English Civil War |
| CROMWELL | Who was leader of the Roundheads in the English Civil War? (8) |
| ROYALOAK | Tree used by Charles II to hide from the Roundheads in 1651 (5,3) |
| FAIRFAX | Military leader of the Roundheads at the 1645 Battle of Naseby (7) |
| INTERIOR | In terror, I replace one of the roundheads on the inside (8) |
| OLIVER | Cromwell, leader of the Roundheads (6) |
| ESSEX | English Civil War general (for the Roundheads), Robert, 3nd Earl of ... |
| PURITAN | An opponent of the Royalists in the English Civil War (7) |
| ENGLISHOAK | Tree species native to Britain known as the king of the forest, in which Charles II hid from the Roundheads (7,3) |
| MAPUCHE | Group of indigenous inhabitants of Chile and Argentina who were the opponents of the colonial Spaniards in the Arauco War |
| OAKTREE | In which the future King Charles II hid from the Roundheads (3,4) |
| NORMANS | Opponents of the English in the Battle of Hastings (7) |
| CONFEDERATES | Opponents of the Yankees in the US Civil War |
| ATHENIANS | Main opponents of the Spartans in the Peloponnesian War |
| ALLIES | Opponents of the Axis in the Second World War |
| LANCASTRIAN | In the War of the Roses, an opponent of the Yorkists (11) |
| CHARLES | Name of a king whose hiding places during his escape from the Roundheads include White Ladies Priory, Boscobel House and a nearby oak tree and Moseley Old Hall (7) |
| HERO | Brave fellow captured by the Roundheads |
| CAVALIER | A clavier composition unpopular with the Roundheads (8) |
| PARLIAMENTARIAN | Relating to the Roundheads (15) |
