It's not that anyone is getting married. It's just that as her brother he's discouraging her from doing things (like making weird faces) that he thinks might discourage potential suitors.
That roasted sweet potato offering is for Gerudo Sr., isn't it?
That's just so cute and heartwarming... Aaaaahh, my heart~~
Is Gerudo also always such a loveable giant in the main story?
Aye, he did. To Momiji of the Tengu clan. (And later to Arubis of the Beast Kingdom).
He needed to leave an heir before he ascended into a Demon Lord, which somehow hastened his first marriage.
The second one was political, seeing as he couldn't reproduce anymore.
14. 6 of them haven't appeared in the manga or spinoff yet iirc. Mind you there's demon lord and "true demon lord". Rimuru and the twelve are considered true demon lords, unlike self-proclaimed ones like Clayman, Karion and Frey. Assuming we consider Ramiris as a permanent resident of Tempest, makes her the 14th.