Somebody said that in Italian, "marcia" means rotten. Someone else "corrected" them, saying that the word is "marcio." In Italian, as in all Romance languages, adjectives have masculine and feminine forms. "Marcia" is the feminine form. The Italian equivalent of "Marcia" as a name is "Marzia" (pronounced "mar-tsya). "Marcia" is also a noun meaning "march" (as in a procession). (Different word, of course.) (The word for the month is "marzo.")