For Mros there are 33 on Yasni with different names. The most frequently searched first names for Mros are: Piotr
Among the most common last names on Yasni Mros is on position 4494.
The source name is Mroz, and is of Polish origin. Mroz means frost. So my information.
(Sent from: Britta Kiefer geb. Mros)