Believe me I went through that explanation, and a few others in deep conversation with my Portuguese and Macanese friends as well as with a Matteo Ricci scholar

Believe me I went through that explanation, and a few others in deep conversation with my Portuguese and Macanese friends as well as with a Matteo Ricci scholar. It seems there was an old Portuguese spelling Macao, and there is Macáu with the accent also from eighteenth or nineteenth century Portuguese. In Cantonese it is called Àomén