But his fine work, which has been frequently challenged by fellow historians, does not remove the grounds for debate.

In many cases the detail provided by these chroniclers, both writing after John's death, was challenged by modern historians.

In 1968 this optimistic view was challenged by economic historians.

Such descriptions have been challenged by contemporary historians.

Starting in the 1960s, that assessment was challenged by younger German historians.

But that view is challenged by revisionist historians.

Despite this, this type of perception has been challenged more recently by modern historians.

Aspects of these various models have been challenged more recently by historians, especially those interested in family reconstitution.

However their portrayal of a tyrannical, vengeful emperor has been challenged by several modern historians.

No significant statement of fact in all four volumes has ever been successfully challenged by modern historians.