I just started reading _Iron Throne_ and it basically gives the reason
there are no halfling nations. The book isn't the only place this is
said but it is a not always remembered Cerillian history lesson,
Halflings began coming to Cerillia AFTER Desimar. Thus there are VERY
few blooded halflings, if any, and as is being discussed in Regency and
Bloodline, it is not as easy for a un-blooded person (or demi-human) to
rule.

The book also provided me with some things your typicall noble child
does. One of my PCs is, kind of, obsessed with getting married with
people.