I also spent most of my early years in Islington (before it became gentrified). My older brothers took me to Arsenal from an early age as it was so close. My parents were born in Tottenham and had cousins living there (before it became stab central shithole) who were Spurs fans. It still doesn't stop me hating them with a passion! As mentioned in another post, I guess it is down to crowd disturbance I witnessed in the late 70s and 80s? They also hate us!