The name Marcia is a girl's name of Latin, Polish origin meaning "warlike". Marcia and is often added to lists like Midcentury Baby Names and discussed in our forums with posts like "This or That? (Girls)".
From the experts:
Marcia is an ancient Roman name which derives from Mars, the god of war. It was used by Dante in the Inferno and later by Thomas Hardy and others.
Marcia enjoyed a brief run of popularity in the mid-twentieth century--it was a Top 100 name from 1943 to 1955-- then was replaced by Marcy and Marci. Now all three are in limbo, replaced by the newer Marley or the more vintage Marcella. An alternate spelling of Marcia is Marsha. A strong association is with Marcia, Marcia, Marcia of The Brady Bunch.