Across the world, Косьцяк (Косьцяк ) is an extremely rare unknown gender given name. Much more prevalently, Косьцяк is the last name as well as the forename.
Kosciak
Марія, Петро, Василь, Михайло, and Василина
) is an extremely rare unknown gender given name. Much more prevalently, Косьцяк is the last name as well as the forename.