Probably a compound word. The first element is related to the base word of emse (“sow”) (originally meant “female”), which in turn is from Proto-Uralic *emä (“mother, woman”). The second element is either a variant of férj (“husband”) which originally meant “man” or is related to an unattested stem -ër, -ér, -ar, but in any case, the stem ultimately derives from Proto-Finno-Ugric *irkä (“man, son, boy”).