[Data-modeling] how much work done on modeling of personal names -- even for surname + given name?

[Raymond Yee]

I would like to be able to sort topics of /people/person (e.g., 
http://www.freebase.com/view/people/person) by the person's surname but 
don't see any generic properties for a person's surname and given name.  
Am I missing something here or is there no such field in the commons.

I realize that modeling personal names is non-trivial (see 
http://en.wikipedia.org/wiki/Personal_name for example) -- but having a 
way to indicate surnames+first names would be very helpful for many topics.

I looked around on the data-modeling list archives but couldn't find any 
discussion around this issue.

What should I do to have sorting on surnames?

-Raymond