The full details of their relationship were not known to the public until her death in 1906.
However, not many details are known of his early life and education.
Few details of his life are known between the mid-1930s and 1950.
And watch out for people who know too many details.
They already knew the general situation and many details, of course.
We will know the details in a few weeks' time.
Only a few people close to the situation know all the details.
I think he knows the details, at least some of them.
I do not know the details of the other two.
No need at all for him to know the details.