I'm not sure now where I heard of this comic - it may have been via the blog American Indians in Children's Literature by Debbie Reese. Anyway, I was intrigued enough to send off for it, despite the postage and packing being more than the comic itself. Their offices are in Albuquerque, New Mexico - a long way from the Welsh Borders!
Captain Paiute is by Theo Tso, who did the story and the art work, and is basically an origin story for the Indigenous Defender of the South West. I hope he tells more stories, showing Captain Paiute working to save his tribe.
Native Realities Press is especially for stories about Native Americans, by Native Americans. Other comics available from them are about the Code Talkers of the Second World War, Deer Woman, and Kaui (a Polynesian tale of Beauty and the Beast).
They also have a poster for sale of Pueblo Jones and the Raiders of the Lost Art. Now there's a story I'd like to read!