A Life of Ninja was released widescreen subtitled by Crash Cinema as Secret Life of the Ninja. It was also released by Brentwood in their Kung Fu Crusade box set as Ninja Grand Masters of Death, widescreen English dubbed. A title card appears with the title Ninja Grand Masters of Death, and then as the credits are running, the title there is just Ninja Grand.
So I guess that gives you three valid AKAs.

Added.