Many of the cultures in Areaer don't have surnames in the modern usage. The Valor Alliance is an example of an empire? confederation? where surnames (among city-folk, nobility and other wealthy /s emi-wealthy) classes is fairly common. Some families also have crests (though I have not designed any).
Heya, #DecemberWorldbuilders! Does your world have any relevant family symbology? For example, crests, heraldry, flags, etc.? Or are surnames important to them? Do they take their surname from their father or do they have a different method? Do they believe in leaving a lasting legacy?