Not-Homer

“I know no man named Judge.”

“I do know a man named Homer Jackson, however, a police surgeon in this quarter who just took down a cold-blooded, murdering Pinkerton out of New York.”

Matthew Judge V’s Captain Homer Jackson

So when did “Matthew” become “Captain Homer Jackson”?

Was it when he went on the run with Caitlin / Susan?

And his medical certificate. Real or fake?

Was there a real Captain Homer Jackson and Matthew assumed his identity?

We know that Matthew Judge was a medical man but why did he become a Pinkerton?