[THE ARTICLE IS DARK AND FULL OF SPOILERS]
The Tower of Joy is understandably one of the most mysterious locations in 'Game of Thrones,' since most of the details about the events that occurred there are virtually lost.
Readers of George R.R. Martin's book series 'A Song of Ice and Fire' are aware that the Tower of Joy is where Lyanna Stark was taken by Rhaegar Targaryen after he allegedly abducted her. It is also the place where her brother Eddard managed to defeat the legendary knight Ser Arthur Dayne with the help of Howland Reed, although Ned was too late to save Lyanna from dying in a pool of blood.
(Some fans would add that Lyanna died of child birth and is the true mother of Jon Snow, however this part has yet to be revealed.)
Remember those names, because they are rather important in the upcoming sixth season of 'Game of Thrones.' Also, they could be associated in a confusing report about the actors who are currently filming fight scenes in Spain's Castle of Zafra, which will stand in for the Tower of Joy in the show.
According to Watchers on the Wall, Luke Roberts, Eddie Eyre and Robert Aramayo have been confirmed to be shooting fight scenes at the said location. However, Eddie Eyre's CV indicates that he will be playing Ser Alfred Hunrith, a character who does not exist in any 'A Song of Ice and Fire' book. Even more confusing, Luke Roberts' CV says he is playing Rowland Selwyn, also a completely new name.
The reveal of possible new characters in the Tower of Joy scene has led to speculations that Eddie Eyre and Luke Roberts have been given aliases to work by. Some believe that Eyre will portray Ser Arthur Dayne and Luke Roberts will play Howland Reed. Unfortunately, fans will need to wait until the premiere of 'Game of Thrones' Season Six before the truth can be revealed.
In the meantime, it would be best to point out that Robert Aramayo bears a striking resemblance to Thomas Brodie-Sangster, who played Howland Reed's son Jojen. There is also a possibility that Eddie Eyre and Luke Roberts are playing either members of the Kingsguard or allies of Ned Stark.