I wonder when the position of lictor was abolished in the Ancient Rome? Who was the last Emperor to have lictors as companions?
I have not been able to find any evidence that Lictors were ever disbanded in Ancient Rome, in fact they seem to have been active well into the 5th century.
Once Augustus came to power their roles were gradually replaced by the praetorian guard, marking their decline as an organisation.
After the fall of Rome, most Roman administrative positions from the republican era, such as the consulship lapsed making the position of Lictor irrelevant.
Here is what I came up with so far. The lictors are mentioned in the Theodosian Code (This is from footnote n.46 in this paper). More evidence for them at the end of the 4th century CE can be adduced from Gibbon who says that one Ammonius "expired under the rod of the lictor". I don't know what was Gibbon's reference for that but he can be trusted to get such things right.
So we know that lictors were still in vogue in the 5th century. When did they disappear? My present guess is that Heraclius might have abolished them as part of his reforms that swept a lot of the Roman heritage away. But that's just a guess, I'll keep looking for a real answer.
I also found this tantalizing pointer:
For the fullest account of the lictors, see Mommsen, Romisches Staatsrecht, i. 355, 374 (3 r d ed., 1887).
Perhaps someone can look it up...