<Tr> <Td> </Td> <Td> Look up when in Rome, do as the Romans do in Wiktionary, the free dictionary . </Td> </Tr> <P> When in Rome may refer to: </P> <Ul> <Li> "When in Rome, do as the Romans do", a saying attributed to Ambrose . </Li> </Ul> <Li> "When in Rome, do as the Romans do", a saying attributed to Ambrose . </Li>

Where did the saying when in rome do as the romans come from