Smerel, i was referring to the English biography that came out in the early 2000s, it was called mishnas reb aharon, in addition to an English title i don’t recall, something “maran rav aharon.” It was painstakingly researched. But if it’s disputed then so be it – I don’t think it’s very difficult to get in touch with the mafia… just ask some no good’niks and flash some cash. mafia men don’t act anonymously; they’re known people with public personas and high profile lives, especially in those days…police were honestly afraid to start up with the big crime families, and they actually made the streets safer for the average person, as they didn’t rob random people that they didn’t have “business” with, and petty criminals were also afraid of them.
Anyways, entrenched means publicly associating with them b’kevius, permanently, in a set way.