As much as I'd like to commit to the gender neutral title, I know no one's going to remember it since it's one letter off from her actual out-of-Jaunt title, so I'm just gonna surrender to the "Princess" in advance.

I am deeply committed to sticking with the trend of Allura's plot role lovers being women, though, so her Consort is definitely a wife. I'm sure the aliens who have bioships would also have the biotech to render the issue of heirs negligible.