As a boy, I learned a native indian martial art

[pgsmith]

And they are not just merely dead, they're really most sincerely dead!

 

[Gerry Seymour]

And they are not just merely dead, they're really most sincerely dead!

Not "mostly dead"?

 

[Transk53]

Its true that before Whites, virturally every tribe used some version of this art.
Its even dep[icted in The last of the Mohicans 1992

From my late grandad, a few Irish fellas he knew, could use a knife. Daniel Day Lewis has Irish blood. Perhaps a film of this kind would interpret many things, including folklore.