Good grid, but Lanchester isn't a city, it's a village in county Durham. You're probably mixing it up with Lancaster. There are also a couple of typos you might want to correct - Pocahontas is spelled 'Pocahontas' not 'Pocahontus', and Hermione is spelled 'Hermione', not 'Hermonie'. The misspellings might make people think there are hidden words that necessitate the misspellings, when the groups are actually very straightforward.

My comments are the same as dgms. I certainly wasn’t thinking of Hermione, expecting it to be something I hadn’t heard of.