I'll write a second reply, I don't normally do this but you completely edited your comment.

> Lisp, including the variants of Lisp that CL was largely derived from, did not always have lexical scoping.

Correct, but you specifically wrote about Common Lisp, thus my reply about Common Lisp, not Lisp (the historical category of languages or the older language definitions which used dynamic scoping rules).

>> No, Common Lisp was not Lexical from day one.

You were very explicit about the language version you were speaking about, as was I in my reply.