"The Roman coins, across which a local farmer came in a field, are now on display in the National Museum."
A) The house into which the thieves broke is owned by Caleb Cruz.
B) He was persuaded to stay in England by Charles Dickens, whom he had shown his novel to.
A) The water into where she fell was freezing cold.
B) The water where she fell into was freezing cold.
All of the above are unnatural English. The last two are ungrammatical.