About

 

Yaxley is one of the first new characters we hear of in Harry Potter and the Half Blood Prince (HBP). His is mentioned by Severus Snape as being one of the Death Eaters who did not try to find the whereabouts of Lord Voldemort after his fall.

From the information given to us about Yaxley by Snape we can deduce that Yaxely, like Avery and Malfoy, was not one of the most faithful Death Eaters. He was never sent to Azkaban, which means that perhaps he was influential in some way, like Lucius Malfoy. However many Death Eater were never convicted and it could be that Yaxley is just a very good liar.

Yaxely does seem to be in the Inner Circle of Death Eaters, as Severus Snape knows him well enough to drag Yaxely up as an example. It is likely therefore that Yaxely was one of the robed Death Eaters who were present in the graveyard. However Voldemort passed him without comment, therefore he would not have done anything particularly outstanding after Voldemort's fall.