The six British kings referred to in the crossword solution are George, Edward, Henry, James, Charles, and William. George was the first Hanoverian king of Great Britain and Ireland, reigning from 1714 until his death in 1727. Edward VII was the eldest son of Queen Victoria and reigned from 1901 until 1910. Henry VIII was the second Tudor monarch, ruling from 1509 until his death in 1547. James I was the first Stuart king of England, reigning from 1603 until 1625. Charles I was the second son of James I and ruled from 1625 until his execution in 1649. William III was the joint sovereign of England, Scotland, and Ireland with his wife Mary II, reigning from 1689 until his death in 1702.