Give_trait Command

[ReiseReise]

I just tried it out and have no problems

give_trait Rufus Arse 4
give_trait William GoodTrader 3 (for King William the Conquerer)
give_trait "Dietrich von Saxony" Handsome
give_trait "Anna Comnenus" PrettyWoman 2

Quotes are not necessary for single names.
Quotes and regular spaces are used for multiple names
Honorifics and other titles are not part of the name.

If you give Dietrich von Saxony Feck 4 so he becomes Dietrich the Profane, you still have to use "Dietrich von Saxony" as his name, even though you can't see the 'von Saxony', this might cause some problems if you can't remember his full name.