Nina (Asylum of the Daleks)
From Tardis Wiki, the free Doctor Who reference
Nina was a girl whom Clara Oswin Oswald fancied, or possibly even dated. Oswin stated that she was "going through a phase."
While shipwrecked on the ship Alaska in the Dalek Asylum, Oswin told Rory Williams about her, and began calling him "Nina," after her. (TV: Asylum of the Daleks)