[Avodah] t'na'im (was "Noda b'Yehudah - How And When To Take Tzedaka From a Married Woman")

[Poppers, Michael]

In Avodah V28n28, RZS wrote:
> But perhaps that t'nai wasn't common in the NbY's day and place <
I never heard of "t'na'im" until I began attending weddings outside the aegis of KAJ/"Breuer's."  Can anyone point to (or write up) a history of the concept?  Thanks. 

All the best from 
-- Michael Poppers via BB pager