Hugh II of Duino appoints Dietrich of Momjan as his representative to inform the brothers of House Pula that he consents to the delivery of the sentence promulgated by Duke Ulrich III Spanheim of Carinthia, previously deposited with him and the late Monfiorito of Pula by Patriarch Raymond and Count Albert I of Gorizia, to whichever messenger the patriarch might send for this purpose.
Anno Domini millesimo ducentesimo octuagesimo primo, indictione nona, die sexto exeunte marcio, apud Civitatem Austriam in domo fratrum minorum, presentibus domino Detalmo de Vilalta, Ottolino notario domini Alberti comitis Goricie, Henrico de Oleis et aliis.
Dominus Hugo de Duino fecit, constituit, ordinavit dominum Dietricum de Mimilano absentem suum certum nuncium et procuratorem ad denunciandum pro parte ipsius domini Hugonis, dominis Gliçesio, Nasinguerre et Sergio fratribus de Pola, quod placet sibi et vult, ut sententiam olim latam per dominum Ulricum ducem Carinthie depositam per reverendum patrem dominum Raymundum patriarcham Aquilegensem in concordia cum viro magnifico domino Alberto comite Goricie penes ipsum dominum Hugonem et quondam dominum Monfloritum de Pola dare et assignare debeant nuncio et procuratori quem ipse dominus patriarcha ad ipsos pro huiusmodi sententia duxerit transmittendum, promittens firmum et ratum habere quicquid dictus dominus Dietricus super hoc duxerit faciendum.
(SN) Ego Henricus Civitatensis imperiali auctoritate notarius predictis interfui et rogatus scripsi.
Paschini (cited above) argued that the present document ought to be viewed in the context of another arbitration, as Count Maynard II of Tirol and Gherardo III of Camino issued another arbitral award in March of 1281 (cf. doc. 1281_SA), whereby they arbitrated a dispute between Patriarch Raymond della Torre and Hugh II of Duino. This is known from a regestum of document from 1367 recorded in Thesauri claritas, which mentions a “sententiam latam inter dominum Raymundum patriarcham et dominum Ugonem de Duyno per dominos Meynardum comitem Tyrolis et Gerardum de Camino scriptam manu Henrici de Civitate Austrie sub MCCLXXXI, indictione nona, die septimo exeunte martio, cuius copiam pro sui [Hugonis VIII] informatione sibi ostendere volebat, in qua continetur quod ipse dominus de Duyno nullam novitatem in dicta strata [qua itur de Montefalcone Tergestum] facere debeat nec molestare transeuntes per ipsam nec per ante burgum sive villam Duyni.” (ed. Bianchi, doc. 1247, pp. 359–360).
This arbitral award does not survive in any in extenso manuscript tradition, but based on the above regestum, it was originally promulgated on March 25, 1281. Thus, Hugh II of Duino would react to this sentence by dispatching Dietrich of Momjan to the brothers of House Pula, the heirs of the late Monfiorito who originally kept an exemplar of a sentence pronounced by Ulrich III Spanheim, duke of Carinthia, regarding an unknown matter. This older, mysterious sentence, that was originally kept in two exemplars, one deposited with Hugh II of Duino and the other with Monfiorito of Pula, now ought to be delivered to the patriarch’s envoys. This would, it would seem, point towards Hugh’s compliance with the arbitral award.
According to De Franceschi (cited above), the matter refers exclusively to the castle of Cormòns, whereby all the charters related to the matter were to be consigned to Gherardo III of Camino and kept for five years (see doc. 1281_SA, article 1). Thus, Hugh II of Duino would comply with the arbitral award and dispatch his representative to consign the charter to Patriarch Raymond, who would then hand it to Gherardo III of Camino. The problem with this interpretation is that there is absolutely no mention of Gherardo III in this document. Thus, it seems more likely that this instrumentum procurationis is connected to the nowadays lost arbitral award regarding a dispute between the patriarch and Hugh II of Duino, as argued by Paschini.
Unfortunately, the vast majority of important aspects remain shrouded in mystery, including the main reason why the House of Pula was involved in these disputes and settlements in the first place.
The lords of Pula mentioned in the document, Glicerius, Nasinguerra II and Sergius I are brothers of the deceased Monfiorito.
Another mystery is the figure of Dietricus de Mimilano (not Milano as Joppi erroneously transcribed it). This individual appears in the 1281 arbitral award pronounced regarding the disputes between Raymond della Torre and Albert I of Gorizia (doc. 1281_SA). The minutely reconstructed genealogy of the Lords of Momjan, a branch of the House of Duino, published by Peter Štih, “Goriški grofje in Devinski gospodje,” Zgodovinski časopis 46/3 (1992): p. 329, makes no mention of this Dietrich. Similar is the case with a Frederick of Momjan mentioned in 1275 (see doc. 1275_GR) – there are simply no primary sources that would shed any light onto the relations between either Frederick or Dietrich and the House of Momjan. Still, it is very much possible that both Frederick and Dietrich were either members of House Momjan or at least in same way genealogically connected to the lords of Duino–Momjan.