If this is correct, he would have been "le Fort", son of --- & his wife ---.
It should be emphasised that this hypothesis is speculative.
However, Robert "le Fort" is already named as missus in Maine, Anjou and Touraine in Nov 853, in a document issued by King Charles II (see below), unless of course this document refers to Robert Seigneur [comte] Sesseau, which is not impossible Secondly, there is a possible connection between Robert "le Fort" and the family of Aledramn [I] Comte de Troyes, who died in  (see CAROLINGIAN NOBILITY).Such indications are provided by Regino who names "Waltgerius comes, nepos Odonis regis, filius scilicet avunculi eius Adalhelmi in Aquitanien" when recording his battle against "Ramnulfum et fratrem eius Gozbertum et Ebulonem abbatum de sancto Dionysio " in Jul 892, and names "Megingaudus comes, nepos supradicti Odonis regis [son of Robert "le Fort"]" when recording his death, also in 892.The author in question may have assumed that Robert was a unique name among noblemen in France in the first half of the 9th century, although this ignores Robert (see the document CAROLINGIAN NOBILITY).The timing of the supposed arrival of Robert from Franconia, assuming that the co-identity is correct, is not ideal either.Roberts birth date range is estimated assuming that his known sons were born in [850/60] as shown below. Some general indications of his origin are found in near contemporary sources, but these are contradictory.
An unspecific Franconian origin is favoured by the Annales Xantenses which name him Ruodbertusortus de Francia, dux Karoli when recording his death.His descendants were created dukes of Bourbon in 1327 (see BOURBON), and provided kings of France from 1589.The Valois dynasty of French kings, sub-dynasty of the Capet dynasty, descended from Charles Comte de Valois, younger son of Philippe III King of France (see Chapter 2), younger branches of which provided later dukes of Burgundy (see BURGUNDY DUCHY, DUKES), kings of Navarre (see NAVARRE KINGS), Dukes of Anjou (and titular kings of Sicily) (see ANJOU - COMTES, DUCS d ANJOU), and Comtes and Dukes of Alenon (see Chapter 2. "le Fort", son of --- ([815/30]-killed in battle Brissarthe 2 Jul 866).According to Pinoteau, the name "Capet" was first attributed to the dynasty by Ralph de Diceto writing in London in , maybe because of the position of the early kings as lay abbots of St Martin of Tours, where part of the "cappa" of the saint was allegedly conserved.The name appears never to have been applied officially to the family of the French kings, which was referred to in primary sources as "la maison de France" from the end of the 13th century, representing chronological continuity from the earlier Merovingian and Carolingian dynasties The Capetian dynasty has been studied widely and needs little introduction.A further indication is found in the charter dated 14 Sep 937, under which Robert "le Fort"s grandson "Hugues abb de Saint-Martin" donated "son alleu de Lachydans le comt de Meaux" to Tours Saint-Martin, specifying that he had inherited the property from "comte Aledramnus" who had been granted it by Charlemagne.