Donahue Hadeon

Donahue Hadeon is a human man who is said to be the former mentor of Sirius Greymoon, and a high ranking member of The Hushed. Sirius first brought him up when Savic Lofthaven revealed to have received a letter about his family from a man with the initials 'D.H.', and Sirius assumed it was him that sent the letter. The letter revealed that he was living at 5 Whitekey Court in Westbrooke. Sirius warned Savic to stay away from the man, explaining that he'd had him tortured in the past.
Kara Wyrmwater said that she was being taught by a strict teacher by the moniker of "Mr. White". Sirius surmised it was none other than him, and warned Mister Cornelius that Kara should not go near him and requested that he be removed from the town.
Donahue was once a host of the Silent One, the strain driving the man to madness. A madness in which he revels, following the leader of the Hushed to the very end.