User blog comment:B214/DxD Zero: Sirzechs story/@comment-2003:45:5D00:9D00:D59D:7785:ABEF:4D2C-20181006195431/@comment-2003:45:5D00:9D00:709F:EDF3:8253:9DCE-20181010200438

I think they could be Branch Families, Or Grandparents (it seems the older Devils gave often they Titels to the Younger Generation (to see in Lord Belial or Zekram Bael).

I mean Lucifer created Millions of Devils and even if many died there should still be thousends of them be existing.