Complex sentence: The idea of a uniquely Canadian monarch has been proffered as an alternative, either one descended from the present queen or coming from a First Nations royal house; however, there has been no popular or official support for such a change.
Split into simpler sentences: The idea of a uniquely Canadian monarch, either one descended from the present queen or coming from a First Nations royal house, has been proffered as an alternative. However, there has been no popular or official support for such a change.