Teresa

What is the place of birth for these ancestors?
RODAK surname shows up in Slovak Republic but I think your research will be in Poland. This from looking in Ellis Island site for MARFICA and CHIOCHON.
Few good sites for research.
http://maxpages.com/poland
www.rootsweb.com/~polwgw/index.html
www.halgal.com
www.surnamenavigator.org
Distribution of RODAK:
http://www.moikrewni.pl/mapa/kompletny/rodak.html
No MARFICA but similar sounding name MARCHWICA, MAREKWICA, MARKWICA and MARLICA in Poland. To hear pronounciation
http://say.expressivo.com