When the Adelphian Society went national in the early 1900's it adopted the name "Alpha Delta Phi." The men's fraternity of that name, founded in 1832, protested. The Adelphians changed their name to Alpha Delta Pi.
I've long been curious as to how that changed their motto and ritual. Greek words beginning with "Phi" are not the same as Greek words beginning with "Pi" (as Carnation has assured me
I was informed (rather archly) by an ADPi that their ritual has been the same forever and ever.
AGDAlum
(whose DH happens to be an Alpha Delt, and his badge is in her jewelry box as she writes. Kaire!)