The Return of the Condor Heroes, also called The Giant Eagle and Its Companion, is a wuxia novel by Jin Yong (Louis Cha). It is the second part of the "Condor Trilogy" and was preceded by "The Legend of the Condor Heroes" and followed by "The Heaven Sword and Dragon Saber". It was first serialised between 20 May 1959 and 5 July 1961 in the Hong Kong newspaper "Ming Pao".
Jin Yong and Louis Cha were the two authors of the "Condor Trilogy"
Clearly Jin Yong (Louis Cha) is one person with Louis Cha and Jin Yong being two names for the same individual. I think the system sees two names and assumes two people.