Yes, did know that Darwin was religious. He never intended for his work to be used against God or the idea of creationism. My understanding is that he believe God created us and that evolution was a process of that creation. Creation in progress so to speak.
there is good evidence that he was in fact christian. he just did not believe in hell or any eternal punishment. he had kind of the same beliefs as Kieth ward.
The best book on the subject is "The Darwin Legend" by James Moore. The head of Scotland Yard's C.I.S. branch investigated his death and was a close friend of Lady Hope. Darwin's family changed their story no less than three times.
At first, they claimed Lady Hope had never been to the house. When it was shown that not only could she describe the inside of his home in detail, but that the local postman had seen her on multiple occasions at the house, they then claimed she had not been there during his last illness. When confronted by the 30 witnesses there on that day, Darwin's family simply went with, "He has made public statements claiming his agnostic belief. He did not promote the Bible in his last days."
The people around him at his death knew they stood to inherit not only a fortune, but a new religion. Any talk of his softening view toward Christianity had to be denied.
In the end, the hardcore evolutionist could not care less about this. If it is true, then they count it as the old man getting soft in his last painful days. Either way, their opinion about evolution will not change based on this.
What it does for us as Christian students of history is show just how much people want to protect the ideas behind evolution as gospel. How they will give sainthood status to anyone just so long as they agree with their racist guesses about prehistory.
It's very interesting that Darwin believe his theories so greatly that he married his cousin and had 10 children with horrible genetic problems. Darwin was a racist by all modern definitions. No one seems to want to list the full title of his book that started all this evolution fantasy: "Origin of Species by Means of Natural Selection, or the Preservation of Favored Races in the Struggle for Life." He believed that the black race was inferior to the white race as a result of natural selection. That is so ridiculous and has no scientific basis whatsoever, but if you believe in evolution the way Darwin presented it, you must accept that premise based on Darwin's supposed "scientific evidence."