For Cromwell he could make allowance.

The Protector had to deal with a Catholicism which would have made an end of him and restored Charles II.

But times had changed.

Catholics had abandoned persecution, and ought not to be punished the sins of their fathers.
The Irish did not claim, as the Southern States had claimed, the right to secede, but to exercise the powers inherent in every State of the American Union.
Carlyle warmly approved of Froude's undertaking, and persisted in believing that it had done good by forcing the American public to see that there were two sides to the historic question, an English side as well as an Irish one.

He was so far right, and with that qualified success Froude had to be content.