Gengen-Wer

Gengen Wer is a god in Egyptian mythology that appears as a goose. He is long forgotten by the Egyptian people, but was famous in Ancient Egypt. He is seen in the series of Rick Riordan's The Kane Chronicles books as a god who is senile. He was sensitive as the earlier Egyptians wrote. He was long forgotten by the Egyptian people, but was admired in Ancient Egypt. He is often associated with artistic expression and laid an egg in the plain of chaos that all matter came from.

Could anyone add the Roman name here?