Pierre Bonaccord

"… the first Supreme Mugwump of the International Confederation of Wizards was Pierre Bonaccord, but his appointment was contested by the wizarding community of Liechtenstein, because —"

- Harry Potter starts answering question ten of the 1996 History of Magic O.W.L..

Pierre Bonaccord was the first Supreme Mugwump of the International Confederation of Wizards. Bonaccord wanted to ban troll-hunting and grant rights to trolls, possibly full "being" status. However, a tribe of Mountain Trolls had been causing a lot of trouble in Liechtenstein, so their wizarding community contested Bonaccord's appointment, and refused to join the Confederation as a result.

Etymology

 * "Pierre" is a French form of Peter. This name was also borne by Pierre-Auguste Renoir (1841-1919), a French impressionist painter, and by Pierre Curie (1859-1906), a physicist who discovered radioactivity with his wife Marie.
 * A "bon-accord" is an expression or token of good will.

Appearances

 * Harry Potter and the Order of the Phoenix