noltrube'a lujvo

x1 is a prince, son of king/queen x2 who reigns over x3

See noltruti'u, noltru


In notes:

noltru
t1=n1 is a ruler of nobility (monarch, emperor, duke, etc.) over t2 by standard n2.
noltruti'u
x1 is a princess, daughter of king/queen x2 who reigns over x3