My parents bought me a Shoot! magazine or similar as a 5yr old back in 1980/81, and it had one of those movable league table wallchart things - remember, you used to move the teams up or down the slots depending on where the were in the league.
To cut a long story short, as I was first doing it I decided I needed to pick myself a team, and thought the best sounding team name by far was Tottenham Hotspur. So they became my team.
I only found out years later, that half my family were Spurs fans and the other side were dirty Woolwich fans.