I was surprised to find that
Ryan has been popular for as long as it has; I totally associate it with the late 1980's-now, and then alone. Boys' names surprise me less, though, because boy's names pretty much never vary. That said- the fact that trendee names have gone to the boys as well in the last decade or so (ushered in by the -den craze).
Niamh is a beautiful name, but I'm so surprised that it's getting popular in England- I'd think they'd go for
Neve. Perhaps, due to their closeness to
Ireland, Galliac names aren't so bear difficult there.