Alaric

Alaric is an ancient regal name that sounds modern enough to be considered. Alaric was a traditional name for the kings of the Ostrogoths, the most famous of whom was Alaric I, the King of the West Goths who sacked Rome in 410.

In literature, Alaric was a noble character in P. G. Wodehouse's Blandings Castle novels, the lead character in Alexander Theroux's Darconville's Cat, appeared in Stephen King's The Dark Tower series, and was the name of a history teacher on The Vampire Diaries.

More unusual than Frederic or Roderic, Alaric could make a quaintly quirky path to all the Al and Rick nicknames.