Around the world, Petronillah (Petronillah 
) is an extremely rare unknown gender forename. Much less frequently, Petronillah is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Petronillah | United States, Kenya |
| petronillah rudo sichewo researcher (ORCID 0000-0002-4261-4057) |
|