She is variously called Alix (or Aelith in Occitan) and Petronilla; she typically went by Alix after her marriage, while Petronilla seems to have been her childhood name (she is referred to as such in her father's will).
Dia banyak disebut Alix (atau Aelith dalam bahasa Occitan) dan Petronille; dia biasanya disebut Alix setelah pernikahannya, sementara Petronille tampaknya adalah nama di masa kecilnya (dia disebut seperti itu dalam wasiat ayahandanya).