Romanov
Nicholas II's last name was Romanov. His full name was Nicholas II Alexanderovich Romanov.
At the time of Saint Nicholas of Myra people did not have last names. If he had addtional names we are not aware of them.
Blakelee
it's Nicolas and his last name is Kave
Nikolay Alexandrovich Romanov
Romanov
Nicolas Matthews♥(:
Parsons
Santa is "Santa Claus" (from Saint Nicholas, as Nicolaus).
Nick Jonas has a last name of JONAS! His full name is Nicholas Jerry Jonas.
Nick Jonas real last name is Jonas.His full name is Nicholas Jerry Jonas.
Last czar was Romanov, first czar was Ryurikovich