DodgyPutter: It doesn't rhyme.
This!
Apart from that, all of the above. 1066 was the battle of Hastings - "William the Conquerer"
On Trafalgar Square, there are at least two fountains plus Nelson's column (51 m), commemorating Admiral Lord Nelson, the deadly wounded victor of the 1805 sea battle near Portugal.
We used the mnemonics in school. The last one originates from English class - therefore not in German ;) And then, someone introduced Trafalgar Square...