Elaborated variant of Marius, an ancient Roman family name possibly derived from Mars, the god of war.
Marrius is an elaborated variant of Marius, the ancient Roman family name often associated with Mars, the god of war. That gives the name a classical and martial background, tying it to Roman history and the long prestige of Latin forms.
As a modern given name, Marrius feels stately and somewhat antique. It has the authority of a Roman name but a slightly softened ending that makes it feel more individualized. The name suggests heritage, strength, and a classical sensibility that still reads clearly today.