"I saw him, Mr. Fudge, I swear it was You-Know-Who, he grabbed a woman and Disapparated!"
-- Williamson, in the Atrium of the Ministry of Magic after Dumbledore's battle with Voldemort (OP36)
Williamson is an Auror, who wears scarlet robes and has long hair tied back in a ponytail.
He accompanied Cornelius Fudge when the Minister arrived at the Ministry of Magic after the Battle of the Department of Mysteries (OP36).
Commentary
Etymology
Williamson as a surname comes from the name William (the "son of William"), which is derived from Germanic "wil" (will, desire) and "helm" (helmet, protection) (Internet Surname Database).
Notes
He was probably the scarlet-robed, ponytailed Auror seen in Auror headquarters with his feet up, dictating a report to his quill (OP7).
Pensieve (Comments)
Tags: defence defense employment enforcement laws red scarlet Wizarding laws