User blog comment:B214/Shin DxD 1 discussion/@comment-181.115.108.207-20180827041432/@comment-30924344-20180827081844

Lucifer was called the King of Devils in V24 in the Artificial Transendance chapter. So no it's completely different. In relation to Rizevim being crown prince before, first proof is Lucifer being called a King and also Azi and Diehauser calling him prince and DxD 0 in narration, calling him Prince Rizevim along with the other maou children: Prince Daimadosu, Bidleid and Princess Tsufaame. We know for a fact at this point Rizevim was the only child of Lucifer and Lilith making him Crown Prince as that's what you call the first royal born prince. Since Vali's father died and Rizevim died, Vali became crown prince. The other maou may have had other children so we can't say they are the first borns but it's very doubtful there's more children. Beelzebub, Asmodeus and Leviathan were confirmed to be royalty in DxD 0 since like i said, the children were referred to as royalty. 72 Pillar characters weren't introduced as Princess or Prince in narration so again, pretty much proves they four maou families are royalty.