'Pipitvaion' is probably something different. Such mistakes usually occur due to the names being homophones but heterographs (similar sounding but different spellings). You have to also consider certain linguistic characteristics for eg. many Asians cannot or do not pronounce 'r' or in German language an extra 'e' is used as a suffix to emphasize them. Hence spellings keep changing. Thats why when I got Catt from Thailand it was named Netlasili Fai ball, it was supposed to be Netrasiri Fire ball.