Well, everybody knows that there exist pairings between names. For example, Александра - Александр, Виктория - Виктор etc. However, sometimes these pairs can be confusing.
It is generally accepted that official female name equivalent of Иван is Жанна ( or Иоанна,Ивана). But what about the name Яна? Is this a variant of Жанна? In some countries it is a pair for Jan (Ян), which is another variant of Jean (Жан). So can Яна also be a pair for Иван?