Yes, it really was Neil Gaiman who wrote Princess Mononoke's English dub

It's official. Neil Gaiman has told the Twitterverse that his writer credit for the English dub of Studio Ghibli's Princess Mononoke was erased because Hollywood.
It's official. Neil Gaiman has told the Twitterverse that his writer credit for the English dub of Studio Ghibli's Princess Mononoke was erased because Hollywood.

Neil Gaiman butted heads with Disney over Princess Mononoke translation - Polygon

miyazaki Angst In My Pangst

GKIDS - Did you know Neil Gaiman wrote the English script

Why Are Miyazaki Movie Dubs So Good?

Is dialogue in anime changed during dubbing? Why do they do that? - Quora

Looking Back at Princess Mononoke After 20 Years : r/Fantasy

Why People Forget Neil Gaiman Wrote MONONOKE's Dub - Nerdist

The Untold Truth Of Princess Mononoke

Neil Gaiman Had To Get Creative While Translating Princess Mononoke

Princess Mononoke: Miyazaki's Complex Masterpiece, by Justin Dempsey

Today I learned that Neil Gaiman, one of my favourite authors, wrote the English translation of Princess Mononoke, one of my favourite films. : r/ghibli