Royal Oak, Frindsbury unclear, but one reported theory is that it was named after the 17th-century warship HMS "Royal Oak", which was sunk at the nearby Raid on the Medway in 1664. Local people say that one of the beams in the pub comes from the ship, the remains of which may have been broken up at a nearby shipyard after the battle. Another theory is that it was named after the Royal Oak that Charles II of England hid in following the Battle of Worcester. In the late 18th or early 19th century it was given a Flemish Bond brick face and
Oak Apple Day to God, for the great Blessing and Mercy he hath been graciously pleased to vouchsafe to the People of these Kingdoms, after their manifold and grievous Sufferings, in the Restoration of his Majesty..." The public holiday was formally abolished in the Anniversary Days Observance Act 1859, but the date retains some significance in local or institutional customs. It is, for example, still observed as Founder's Day by the Royal Hospital Chelsea, which was founded by Charles II in 1681. Traditional celebrations to commemorate the event often entailed the wearing of oak apples (a type of plant gall, possibly known in