Rory is a buoyant, spirited name for a redhead with Celtic roots. The name Rory is getting more popular overall, but for the past few years has been trending decidedly toward the boys' side -- however, it was also one of the on-the-rise names for girls in 2013.
It's worth noting, however, that while Rory is used a third of the time for girls in the US, in Britain it's never used as a girls' name. According the 2014 baby name statistics for England and Wales, Rory ranked in the boys' Top 100, given to over 450 baby boys, but was given to no baby girls. In London or Liverpool, naming your daughter Rory is like naming her....Roger.
Rory (or Rori) might also be a nickname for Aurora. In the TV series Gilmore Girls, Rory was the nickname for Lorelai.
Robert Kennedy's youngest daughter, born after his assassination and now a respected documentary filmmaker, is named Rory. Actress Melora Hardin named her daughter Rory Melora.