Hadley, most famous as the name of Ernest Hemingway's first wife, is more sophisticated, professional, and modern than cousins Harley, Haley, or Hayden. The hit book The Paris Wife, a novel by Paula McLain told from the point of view of Hadley Hemingway (born Elizabeth Hadley Richardson), has helped popularize the name, which also appears on the vampire show True Blood. Hadley could become this generation's Hailey. Adley, a mashup of Hadley and Addie, has also appeared on the scene.

The surname Hatton has three primary origins — English, French, and Irish/Scottish Gaelic. The English variation is a combination of compounds meaning "heather" and "settlement," while the French is derived from Germanic given names beginning with Hadu-, meaning "battle."

A lively English surname that was popularly given as a male first name in the Victorian period, and is ripe for revival today.

The English cognate, Heather, is stuck in the '70s, but Hungarian Hanga is a modern hit in its country of origin.

A pretty alternative to Hadley, but perhaps a little too close to sound distinctive. Hedy would be a cool nickname, after legendary actress and inventor Hedy Lamarr.

Pronounced like Bruce with a hard K — not like Brook. Short names are very popular in Catalonia, and this rugged choice is a rare example of a botanical boy name.