I don't have enough information to specifically say who Roman Coleman is in this 'true story'. It could be an ordinary person with a unique experience, or perhaps someone who has made an impact in a particular field but is not widely known outside of the context of this story.
Well, I'm not entirely sure if 'Roman Esquire' is a true story. There could be elements of truth in it, but it might also have fictional parts added for the sake of the narrative. It really depends on the context and the research done on it. Maybe it's a story that was inspired by real events and then embellished a bit to make it more interesting.
Roman Charity is based on a legend, not an actual documented true event. So, in a strict sense, it's not a true story as we might think of it in modern terms.
Roman Israel is not based on a true story. It's a work of fiction crafted by the writers and filmmakers to entertain and engage the audience with a unique narrative.