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 "Lymantria dispar", which can defoliate oak and other broadleaved tree species in North America. A considerable number of galls are found on oak leaves, buds, flowers, roots, etc. Examples are oak artichoke gall, oak marble gall, oak apple gall, knopper gall, and spangle gall. A number of species of fungus cause powdery mildew on oak species. In Europe the species "Erysiphe alphitoides" is the most common cause. A new and yet little understood disease of mature oaks, acute oak decline, has been reported in parts of the UK since 2009. Oak processionary moth ("Thaumetopoea processionea") has become a serious threat