Founded in 1999 by someone called Chang Chin, Marquês started out as a Brazilian maker of Cavacos. In the intervening years they have added a lot of chordophones, both Brazilian folk types and more international, to their range, including some Ukuleles. They are, I believe, based in San Paolo but my Portuguese is sadly no better than my Japanese and it doesn't say on the website. I am not sure if the instrument are made in Brazil or China, but from the Cavaco examples I have seen they make some very imaginative instruments and I haven't seen anything similar from a Chinese factory?

Back to the ukuleles and there was a couple of Sopranos and Baritone, (possibly a Venezuelan Cuatro hybrid but it did say specifically it was a Baritone Ukulele), at least one of witch looks like it might be Chinese? A chordophone it specifically describes as a hybrid Ukulele/Cavaco and of course all of the Cavacos that could easily be converted.

It appears Ukuleles are no longer in the catalogue.