Durak is the son of Aggralan and Thrall.

Is Thrall Draka's son?

Durotan and Draka's murder Draka birthed Thrall, child of Durotan, shortly before joining her chieftain on his excursion to the southern lands to meet with their old comrade Orgrim Doomhammer.

Who are Thralls children?

Durak is the orc son of Aggra and Thrall. Aggra was revealed to carry Thrall's baby by Alexstrasza moments after the death of Deathwing.