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Dictionary of Medieval Names
from European Sources

Mirko m. A dim. of any of various names beginning with Slavic mir, měr, mierz, myr 'peace', such as Miroslav, or a Slavic form of Emery.

Czech Republic
Latin
1358 Mirkoni (dat) chlumecky 262, p. 32
Middle High German
1370 Mirco (nom) Rössler1 62
Cite as: S.L. Uckelman. "Mirko". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2016, no. 3. http://dmnes.org/2016/3/name/Mirko.