http://en.wikipedia.org/wiki/Culdee contains a fair amount of information regarding the "Cele De" under the English version of their name. Also, see discussion of this answer
Cele as itself can be a river in France. But as an acronym, it can stand for several meanings. Some of them are the following: Circulo de Estudios la Embroscadura.
Cele Abba was born in 1906.
Cele Abba died in 1992.
Bheki Cele was born in 1952.
Cele Goldsmith Lalli was born in 1933.
Cele Goldsmith Lalli died in 2002.
Cele Hahn was born on 1942-03-21.
Cele Dabhaill mac Scannal was born in 858.
Cele Dabhaill mac Scannal died in 927.
"Cele-" is not a root. There is a root kel- which has many different meanings.
Henry Cele was born on January 30, 1949, in Durban, South Africa.
-cele