White chevronels - narrow chevrons above and below the gold chevron - symbolise peaks and mountains, and the Middleton family's love of the Lake District and skiing.

BBC: Royal wedding: Kate Middleton coat of arms unveiled

There are boaters from Utah and fly-fishers from California, who love the freedom of the lake and the clear trout-stream waters below the dam.

ECONOMIST: Water in the West (1)

Silver Lake, with Texas Pacific Group, has provided much of the inspiration for today's private-equity love-in with tech.

ECONOMIST: Private equity and technology