Jodeci

In the case of the R&B quartet which helped popularise the name in the early 1990s, it is taken from the names of its members, Joel "JoJo" Hailey, Donald "DeVanté Swing" DeGrate, Dalvin "Mr. Dalvin" DeGrate and Cedric "K-Ci" Hailey.

Combination of Jo-, from names beginning with that pattern like José and João, -de-, likely taken from names like Valdemiro and Aldemiro, and -ci, taken from names ending with that pattern, e.g. Juraci.