Frederic III, duke of Upper Lotharingia

-http://fmg.ac/Projects/MedLands/LOTHARINGIA.htm#Beatricedied1076
a) FREDERIC ([1017]-22 May 1033, bur [Abbaye de Saint-Mihiel]). The Chronique of Jean de Bayon records that "Fridericus ex filio nepos, quia ipse æquivocus filius ante obierat" succeeded on the death of "Theodericus dux" in 1029 and records that he had "sorores tres, prima Sophia, quam Ludovicus comes, secunda Beatrix quam Bonifacius marchio Italiæ, tertia Petronix, quam quidam Elisatii princeps"[147]. He succeeded his grandfather in 1027 as FREDERIC III Duke of Upper Lotharingia, and is documented 6 Sep 1032 as being invested with the administration of the duchy[148]. After his death, Konrad II King of Germany installed Gozelon Duke of Lower Lotharingia as Duke of Upper Lotharingia, passing over the late duke's two sisters.