of Luxembourg.

Now, Dante's list does not go on from Albert to Henry.

It is assumed, therefore, that this passage must have been written before the end of the year 1308.
There is another passage at the close of chapter vi.

of the Fourth Treatise (on page 186 in this volume) that points to a like inference of date.

Dante writes: "Ye enemies of God, look to your flanks, ye who have seized the sceptres of the kingdoms of Italy.