The Templars did sping to mind, but they had a far different hierarchy to the Thirty. The Knights Hospitaller were also a considerartion, but perhaps more so as the Knights of Malta.
Come to that, many of the Chivalric Militant Orders of the Medieval era would have served as a model for the 30.
The specific example I'm trying to remeber were in the latter Byzantine era and hailed from the eastern meditteranean....could have been the Maltese Knights I suppose but I am not sure they were Christian in faith.
I like the comparison to a Western Knights Militant meets Eastern Koryu Bujutsu school.
Tenden Katori Shinto Ryu, the oldest recognised Pre Meiji Restoration school in Japan, has an overall headmaster who is not required to be an expert at everything, and separate sensei for each art taught so that would fit quite nicely.
There is a lot of this cultural and historical 'blurring' occuring in fiction as the globe becomes more connected. I wonder if we will reach a point in some far distant future, where figures from novels published today will form a prominent part of historical understanding.
I am lucky I don't have to babysit hyper-active sugar guzzling little monsters! My house is however currently infested by two small people which I am told are a biological shoot from my ancestral tree
It's not so much babysitting as an ongoing war....and one in which I feel I may be fighting a rearguard action.
Those cartoons reveal you to be a 30-somthing
Big Daddy and Giant Haystacks reveal you to have been psychologically traumatised as a child