The name is either a modern French form of the Frankish, Berthilde or a derivative of Bertha. Beraht is a Germanic element meaning, “bright.”
As of 2010, Bertille was the 357th most popular female name in France.
The name was borne by three early French saints.
Other forms of the name include:
- Bertile (French)
- Bertilla (Italian)
- Bertila (Spanish)