Other than Mira and Loki, as per the orders of the Yorkeluns, the final dragonborn was slain in 735AD, marking the success of the dragonborn genocide. They were hiding in a mountain in Godak when they were slain. To put the strength of a single dragonborn into perspective, when the Yorkeluns learnt of their location, they sent an army of 2000 humanoids and 30 giants to capture them. Only 900 humanoids and 3 giants walked out of that cave.