In all the world, Soboljev (Соболев , Soboljev ) is an extremely rare boy's first name. Much more prevalently, Soboljev is the last name as well as the forename.
Sobolev, Sobolew, and Соболєв
Sara, Dario, and Nikolaj
, Soboljev 
) is an extremely rare boy's first name. Much more prevalently, Soboljev is the last name as well as the forename.