another aspect of Dyson social structure is that the family name that continues on is not a male driven thing.

in a marriage the family name that is kept depends on A: who is the 'first born' (male or Female, makes no difference) or B: who is the older

as proper Dyson have very few children this usually would mean that many family names get 'lost' but there is one other factor. even though most Iron born, by their very nature, despise the "city of devils" as some iron born say, a small but significant amount of them make the treks to Steel Kin cities and become accepted. these are usually second born or third (or more are Dyson Iron born usually lead short brutal lives) and so a Dyson name line is not lost.

why all this back blabbering. because it explains why Aurthur takes Liu's last name of Sheeah when they get married. an extra tidbit is that Liu is the fighter and Aurthur is the Healer/BuffDebuffer ( remember MMORPG veneer)