However, if "Andes" were an Albanian name, then it is most likely to represent the Genitive case (English = "of Anda, or "belonging to Anda"; "Albanian -i Andes", with prefix "-i" diminished in the name) and not the Dative, given that names and surnames traditionally and technically represent the Genitive case, also known as Possessive case or Second case ( e.g. "O'Connor"= "of Connor", "Johnson"= "Son of John" etc.).
The Andis (къӀваннал in Andi, андийцы in Russian) are one of the indigenous Dagestanian peoples of Russia.
With Georgy Adelson-Velsky, he invented the AVL tree datastructure (where "AVL" stands for Adelson-Velsky Landis).