He came in 1842, 1867-68, and came for short visits from 1858-70 to do readings of his work.
Charles Dickens lived in Italy briefly during 1844.
can't be accurately answered - but they are known to have visited at least twice.
I imagine that they are tours which focus on a literary figure. For example, if you were interested in Charles Dickens, I have no doubt that there will be tours in London which visit many of the places associated with Dickens and/or some of the characters in his novels.
Sixteen times
Dickens tries to advocate on behalf of the lower classes, since they were typically unrepresented in Victorian times.
Only when you do.
twice
5 times
100 times
Many, many times.
He never visit U.S.
he came to America to preach seven times 7 times