Lithium hydride
Before the Castle Bravo nuclear weapons test in 1954, it was thought that only the less common isotope lithium-6 would breed tritium when struck with fast neutrons. The Castle Bravo test showed (accidentally) that the more plentiful lithium-7 also does so under extreme conditions, albeit by an endothermic reaction.
Castlemore Moat
The motte and bailey castle was constructed in the 12th century AD by Raymond FitzGerald (Raymond le Gros), one of the commanders of the Norman invasion of Ireland. The land of Forth O'Nolan was granted to Raymond and he married Basilia, sister of Strongbow. They lived together at Castlemore.