So in March 313 Licinius married Flavia Julia Constantia , half - sister of Constantine I , at Mediolanum ( now Milan ) ; they had a son , Licinius the Younger , in 315 .
Head entity: licinius the younger Q166731 29 30 31
Tail entity: flavia julia constantia Q238023 6 7 8
Relation (head \u2192 tail): P40
Inverse relation (tail \u2192 head): P25