Je m'amuse un peu

Provincias condados procedentes de los territoria, o terrenos circundantes a las ciudades, que integraban varias fincas rústicas que con el tiempo se independizan de las mismas y a cuyo frente estaba un comes territorii o comes civitatis. Eran por tanto territorios integrados en las provincias-ducados, compuestos por latifundios de la Corona o los particulares.

traduction à l'arrache :
Les provinces comtales découlent des territoires ou des terres péri-urbaines qui intégrèrent diverses exploitations rurales qui, avec le temps, se rendirent indépendantes et devinrent des comtés ruraux ou des comtés citadins (grossièrement traduit, cf. http://la.wikipedia.org/wiki/Administratio_regni_Visigothorum ). C'était  pour autant  des territoires intégrés aux provinces-duchés, complétés (ou intégrant compuestos = composés) par les grandes propriétés de la couronne ou celle de particuilers.

Au passage, j'y repense, ce que je viens de traduire correspond aussi aux "iqlim" et "yuz" musulmans, comme décrits dans plusieurs textes que j'ai lu : il y a une zone d'exploitation agricole (fermes ou élevages), on met un château au milieu et un type pour diriger et protéger tout ça et ça devient un comté ou un iqlim/yuz. Les indigènes ferment leur gueule et tout roule administrativement.

J'ai trouvé ça sur Medieval Lands

Twenty-six Visigothic nobles are recorded in contemporary documentation with the title dux, dated to between 578 and 693.  Three (maybe four) of the same persons are recorded in other primary source documents only with the title comes.  The information available is insufficient to reconstruct any noble families, let alone to decide whether the title was inherited within family groups.  Most of the references include no indication of the territorial jurisdiction of these duces, assuming that the Visigothic kingdom was in fact divided into administrative areas which were each governed by a dux.  The only references which have been found to ducal areas of jurisdiction (all of which are recorded in more detail below) relate to "provinciæ dux...Argimundus" (no province specified, dated to [590]), “Claudium...ducem Emeretensis civitatis” (Mérida, undated, but the same person is also named in a source dated to 586), “Dogilano duce Lucense” (Lugo, dated to [650/52]), “Ranosindo Tarraconensis provinciæ ducis” (Tarragona, dated to [672/73]).  Some indication of Visigothic “dukedoms” is also provided by references in much later Christian sources to Fáfila, supposed father of Pelayo King of Asturias, and Pedro, supposed father of King Alfonso I, both as duces in Cantabria (see the document ASTURIAS, LEÓN KINGS).  No such references are found in the earlier Christian sources in the Iberian peninsula and it is possible that the Cantabrian title represents an invention on the part of the later chroniclers.
The Lex Visigothorum (Liber Iudiciorum, completed in 654) includes reference to the responsibility of judges “ad provincie ducem” and “provincie sue duce vel comite”[408].  Brief references to provinces are also found in other sections of the document, but the 654 Lex includes no book or title which establishes the structure of civil territorial administration.  Insufficient information has been found in the primary source documentation consulted during the preparation of the present document to indicate that the Visigothic kingdom was formally divided into administrative provinces and that the duces were appointed to fulfil a role of local civil jurisdiction, directly responsible to the king.  It appears more likely that “ducal” appointees fulfilled primarily a military role, in line with the Roman practice, probably carried out in specifies cities or provinces depending on the military requirements of the time.  If that is correct, the situation in Visigothic Spain would resemble the probable situation relating to “ducal” appointments in the Merovingian Frankish kingdom, as discussed in more detail in the Introduction to the document MEROVINGIAN NOBILITY.

http://fmg.ac/Projects/MedLands/VANDALS,%20SUEVI,%20VISIGOTHS.htm#_Toc359944958

j'ai trouvé 21 ou 28 coras selon les sources. Ça correspond en gros pour ce qui est du nombre de provinces.

Ensuite, pour le caractère héréditaire ou pas du titre, c'est clair que cela correspond à l'héritage romain qui prévaudra en France jusqu'aux Carolingiens : le roi nomme une personne ad hoc. S'il se trouve que c'est le fils de son père, c'est une heureuse coïncidence S'il se trouve qu'il a justement un paquet de terres dans ce duché, c'est que c'est l'homme de la situation, sans aucun doute