He entered the diplomatic service of the Holy See on 1 July 1986 and was assigned to Apostolic Nunciatures of the Holy See in Haiti, Nigeria, Bolivia, Canada, Germany, the United Kingdom, Egypt, Spain and Cuba.[2] On 27 March 2008, he became head of the section for French-speaking countries at the Secretariat of State.[2]
The Speich family coat of arms dates to the first half of the 13th century.[7][8][9][a] Speich assumed the motto of Speich family of Strasbourg, which has been in use since 1415. This motto, "Wi I Kan", which is in Alemannic German and means "As I can".[citation needed]
German: In Silber über grünem Dreiberg steigender gebildeter goldener Mond, uberhöht von goldenem Kreuz,
French: D'argent à la croix d'or alésée à pal brochant la fasce en chef sur la lune croissante d'or figurée en abîme, le tout sur trois pointes de montagne sinople
^Cf. Pays d'Alsace, Willgottheim Woellenheim, Deux villages du Kochersberg, Société d'Histoire et d'Archéologie de Saverne et environs, No. 120 -123 (1982-1983), ISSN0245-8411.
^Gottfried Heer, Zur Geschichte glarnerischer Geschlechter, derjenigen des Serftales insbesondere. Allerlei Bilder aus vergangenen Tagen, Ed. Rud. Tschudy, Glarus, 1920
^JMS (Summer 2012). "[s.n.]". Kocherschbari (in French) (65). Truchtersheim, FR: Association des amis du Kochersberg: 26–32. ISSN0243-2498.
^"Mgr Speich reçoit la Légion d'Honneur". Église catholique en France. Édité par la Conférence des évêques de France (in French). 6 January 2010. Archived from the original on 20 August 2015. Retrieved 20 August 2015.