"Blend of Cee and Jay"
The name Ceejay is commonly a male name from the "English" origin.
Ceejay is written from the spoken English names of two letters, C (cee) and J (jay), so it works as a way of setting the initials CJ down as a single word. The same pattern produces Jaycee from the initials JC and names such as Dee and Kay from single letters. It has no earlier history in the birth records, which is consistent with a modern formation rather than an inherited name.
The pronunciation of Ceejay is SEE-jay.
