Issac's adventures in Byzantine

[theguywithvikingobsession]

Maniakes immediately took him [Pardos] prisoner and had him executed by extraordinary, even for Byzantines, method: stuffing his nose, mouth and, for good measure, ears with horse dung.

Source: The Last Viking: The True Story of King Harold Hardrada, page 193.

 

[CoolMe]

So who's the guy that was executed? Was it "Issac"? Or "King Harold Hardrada"? If the latter what's Issac's role in this? And why was the Harold guy executed? Or was it someone else entirely? Nevertheless, why did they did it, was it just because he was a "Viking"? If so, fuck the Byzantines!