Henrietta Maria (the queen consort of England) was a famously strident Roman Catholic. She outraged her husband's subjects by praying publicly under the gallows at Tyburn, where many Roman Catholics had been killed for their faith, and, in private, attempted to convert her Calvinist nephew, Prince Rupert.
Her husband, Charles I was beheaded in 1649 at the close of English Civil War, and Henrietta Maria survived him by over twenty years. Charles I was still a Protestant at the time of his execution. Is there any evidence as to what the queen dowager thought - or might have thought - regarding his eternal fate? Did she believe he was in heaven or in hell?
EDIT FROM COMMENT
(OP's response to T.E.D.'s question: "Are you curious what exactly being out of communion implied to Catholics at the time?")
"Yes, I suppose I am. What spurred me to ask the question was reading about Henrietta Maria, and then recalling an article I had read a while ago about the many mixed marriages - Catholic and Protestant - in Europe during the Thirty Years War. Henrietta Maria and Charles I is the most famous example of such a marriage that I can think of, and seemed like an interesting test case of what such spouses might have thought about each other."