AZ: Calpolli and exchange

[Richard Haly]

Greetings:

"Ah, the old questions and the old answers...There's nothing like =E9m"
..Samuel Beckett

Does any have any thoughts on calpolli, lineage? clan? etc. etc. and
moreover what evidence do we have to make said arguement? I've read a bunch
of Pedro Carrasco and Eliz. Brumfiel, and even some van Zantwyck (tho' none
of this is handy as I'm travelling) and I seem to recall that there were
calpollis with both commoner and noble lineages in them. Does anyone know
any thing about exchange between calpoltin ? By exchange I mean sponsorship
of festivals, gift-giving, commodity exchange, and of course marriage?

Much obliged as always,

Richard Haly