Stefan Constantin Nemanijc

 Stefan Uroš II Milutin & his second wife had two children:

-http://fmg.ac/Projects/MedLands/SERBIA.htm#Milutindied1321B

1. STEFAN KONSTANTIN ([1283/94]-killed in battle in Zeta 1323). The primary source which confirms his parentage has not yet been identified. Knez of Zahumlje 1303/06. His father granted him the appanage of Zeta some time after 1314[220]. He was proclaimed king in Zeta on his father's death in 1321[221], and refused to submit to his half-brother but the latter invaded Zeta and defeated Stefan Konstantin in battle[222].