Michael Tangl
Michael Tangl (1864 – 1921, in Klagenfurt) was an Austrian scholar of history and diplomatics, and one of the main editors of the ''Monumenta Germaniae Historica'', for whom he published the correspondence of Saint Boniface, an edition still used by scholars and considered the definitive edition. Provided by Wikipedia
1
Published: 1890
Superior document: Archiv für österreichische Geschichte 76,2
2