Surname Gayanush (Гаянуш , Gayanush ) , worldwide, is an extremely rare cognomen. Much more prevalently, Gayanush is the forename as well as the last name.
Гаиануш, and Гайануш
Sahakyan
, Gayanush 
) , worldwide, is an extremely rare cognomen. Much more prevalently, Gayanush is the forename as well as the last name.