No, uBlock Origin was the original. The fork was confusingly also called uBlock. Origin==original.
See https://github.com/gorhill/uBlock/commit/06334a190ea9589e983... (or Wikipedia)
> https://github.com/gorhill/uBlock/commit/06334a190ea9589e983
[1] https://github.com/gorhill/uBlock
[1] https://github.com/gorhill/uBlock