Liam is the top boys' name in the US, holding the Number One spot for the past eight years and also ranking as one of the most popular boys' names around the western world.

Isabelle is the French variation of Isabel, which emerged in the Middle ages as an Occitan form of Elizabeth. Medieval queens Isabella of Angoulême and Isabella of France helped popularize the name in the United Kingdom. Isobel is the Scottish version, Isabella the Italian, and Izabel is used in Brazil.

Holly ranks just in British Top 50, but it's been out of favor here since the 1970s Era of Nickname Names. Still, the name may be on her way back as a rejuvenated nature pick.

Though it relates to the Irish original, Ashlyn and its next most popular form, Ashlynn, owe more of their popularity as baby names in the US to the megastar Ashley, though all three have been dropping on the charts lately.

Has a sharp investigative quality that's not a bad thing to impart to a child.