Around 30 years ago, when I spent more time than was good for me driving round the west country watching student teachers work in schools, I developed – tentatively – what I called the Tamsin Tristram Tamara Index. I'd check the names on class registers to see how often Tamsin, Tristram, and Tamara (and a good few non-alliterative others) cropped up. Depending on the score, I'd form a rough and ready view on the social catchment of the school – which I'd then check out with the teachers. It tended to work.
I was reminded of this the other day as I wandered past St Pauls and had a good view of the anti-capitalist protesters out-staying the cathedral's hospitality. I wondered how well the index would work here, and was pleased to see at least one Tristan recorded by the Daily Mail. I suspect that Tamara and Tamsin were there as well. Maybe they were in that bastion of anti-capitalism – Starbucks – along with Ev.