Certainly not. The first emacs was created for the TECO editor on ITS by various people. It was further developed and maintained by RMS. Gosling's emacs came a few years later.
Re:A Mystery of Unix History
by invsblduck on Wednesday November 20, 2019 @03:39PM
(#21588237)
Then there's this debacle I've never spent enough time getting to the bottom of... https://www.reddit.com/r/programming/comments/dhrcxw/james_g...
https://github.com/larsbrinkhoff/emacs-history has the details... there's some Gosling code (notably display.c with the skull-and-bones warning) in Emacs 13, but none that I can find in 15 and later.
As other comments note, they were developed on earlier models or non-Dec terminals.
Also Emacs was not developed on Unix. The first Unix Emacs was created by James Gosling of Java fame.