The giants of Kyor are quiet contributors to the guild system, often valued highly but rare in the dealings of the heritage. Giants are most prevalent in the Frostlands where they work for the dwarven guilds collecting resources in the most inhospitable of terrain stalwart against any wind or weather. They have little interest in working underground in the tight tunnels their brothers have created, instead preferring the majesty of the great outdoors.

The PHB for 5e has that as a note in the suggested names section! They put their clan name first “as a mark of honor”.

Giants have three names (personal, trait/nickname/clan) and introduce themselves by all three as much as possible.