Inspired by the exploits of the Batman and Robin of Gotham City, Percival Sheldrake, aka the Earl of Wordenshire, and his son, Cyril, took up the mantles of superheroes, the Knight and the Squire. They became the British representatives in the 'Club of Heroes' aka the 'Batmen of all Nations', a group of international heroes who met on a Caribbean island.
Note:In Post-Crisis/New Earth continuity, Cyril Sheldrake's father Percival was the first Squire, after having his life saved by the Shining Knight and becoming his sidekick. When Percy grew up and adopted the identity of the 'Knight', his son Cyril became the second 'Squire'.