Last name Kayny (Кайный , Кайний , Kayny ) , all over the world, is an extremely rare cognomen. Much more prevalently, Kayny is the forename as well as the last name.
Каини, Каины, Кайны, and كايني
Brito, Maceno, and Silverio
, Кайний 
, Kayny 
) , all over the world, is an extremely rare cognomen. Much more prevalently, Kayny is the forename as well as the last name.