Might be of Welsh origins composed of the names "Dai" and "Nêr" meaning "beloved Lord". Or possibly could a play on the word "day" plus the "nerys" taken to mean "lady who shines or burns".
The final episode of "Game of Thrones" was recently aired, meaning that the series came to an end. You might want to amend the description of this entry to reflect this, i.e. "Game of Thrones" (2011-2019). Also, English is not my native tongue, but I think you might have meant 'adaptation' instead of 'adaption'. [noted -ed]