two groups with the same name

Putting the Philipine crap aside. There's a local at my alma mater called Zeta Chi (a former Delta Chi chapter). Back in college I remember finding another fraternity and a sorority with the same name. The odd thing is they all had the same colors. I just searched to double check my facts and found a third Zeta Chi fraternity out there. I remebr one of the brothers at my school said they had contacted another Zeta Chi (don't know which one) about forming a nationals but that went no where. So, there's at least 4 different Zeta Chi's out there.