Marietta f
Italian: diminutive form of MARIA (SEE Maria), now sometimes used as an independent name in the English-speaking world. In Gaelic Scotland Mar(i)etta is quite commonly used as an Anglicized form of MAIREAD (SEE Mairéad), and abbreviated to ETTA (SEE Etta).
Cognate: Spanish: Marieta.
First names dictionary. 2012.