None, however some of the episodes are put into small, comic strip like books.
The TV series "Merlin" is loosely based on the Arthurian legends and characters from the British folklore and literature surrounding King Arthur and the wizard Merlin. It's not directly adapted from a specific book series, but draws inspiration from various sources such as Sir Thomas Malory's "Le Morte d'Arthur" and other medieval tales.
BBC Merlin is not based on any book. It is based on the Arthurian legends but it is the directors and the writers interpretation of the legends.
Merlin - TV series - was created on 2008-09-20.
Colin Morgan
The duration of Merlin - TV series - is 2820.0 seconds.
On the TV series Merlin, Gwen loves Arthur because of the type of person he is. His status has no bearing on her feelings for him at all.
The head writer is Julian Jones.
nobody but you
the answer to your question is in the video interview (amogst other things) http://www.digitalspy.co.uk/tv/a138036/tony-head-talks-merlin-series-two-who.html
in the tv series Merlin yes he does
Freya was a cursed girl imprisoned by a bounty hunter in BBC Merlin TV series. No doubt Merlin liked this poor girl. Her name coming from a viking goddess name ...
Merlin Olsen was in Little House on the Prarie...He played the friend of the Dad with the beard...also he was in the flower delivery commercials for FTD
Old English from about the 7th century.