First myth about Elephant and Castle: it gets its name from the local mispronunciation of ‘Infanta de Castille’. The story goes that a Spanish princess (the infanta in question) stayed briefly in this part of Southwark. Some versions have it that she was on her way to marry Charles I in 1623.
It is more probable that this important crossroads in London was named after a local pub (not the current Elephant and Castle pub), which in turn would have taken its name from the device of an elephant and a castle (or a howdah). This could have been from a guild association. Two suggestions for the guild are the cutlers (who would use ivory for handles) and locksmiths (for whom both elephants and castles would symbolise security).
Second myth: the strange, illuminated aluminium box building in the centre of one of Elephant and Castle’s two roundabouts is owned by Richard D. James, AKA the Aphex Twin. Given James’ reputation as the most reclusive and eccentric of electronic musicians, it doesn’t feel improbable. The truth seems to be that he lives in a converted bank nearby.
Myth two and a half: cats can perch like howdah-riders on your shoulders while you type. It’s half a myth because they can, but you can’t, as I’m now discovering.