Belgian barrister; born at Laeken, Belgium, July 23, 1860; educated at the University of Brussels; professor in the law department of the Ecole des Sciences Politiques et Sociales and of the University of Brussels; member of the Académic Royale d'Archéologie de Belgique; counsel of the Etat Indépendant du Congo and counsel of the Jewish Colonization Association; president of the local committee of the Alliance Israélite Universelle. He wrote: "Les Masuirs," 2 vols., Brussels, 1891; "Les Waréchaix," ib. 1894; "Esquisse du Cours de Droit Constitutionnel Comparé," ib. 1896 and 1899. Errera has contributed many essays to the law journals of Belgium and other countries.