SmirnovmRussian Derived from Russian смирный (smirny) meaning "quiet, peaceful, timid". This is one of the most common surnames in Russia.
StoicaRomanian From Romanian stoic meaning "stoic, impassive".
Xu 1Chinese From Chinese 徐 (xú) referring to the ancient state of Xu, which existed to the 6th century BC in what is now Jiangsu and Anhui. The character 徐 means "slowly, calmly".