Tenoch

[Accounts Clerk]

Wouldn't "citizen of Tenochtitlan" be rendered something like Tenochcatl
rather than Tenoch?

Tenoch is the stem of the compound  noun tenoch-tli which means hard fruit
of the prickly pear cactus.
Literally, tenoch would mean "hard nopal fruit" and tenochca-tl would be the
inhabitant of "the hard nopal fruit".

Tenoch-tli = te-tl (rock, sense of hardness); noch-tli (fruit of the
nohpal-li); Ca-tl= the gentile noun indicating dweller, inhabitant.