Ramon Berenguer I's organization of a network of castle tenure and military service around convenientiae spread widely throughout Catalonia. Lower levels of the lay aristocracy mimicked the count's actions and his words; similarly, the regime spread – in varying degrees – to neighboring counties, and to the ecclesiastical hierarchy, both secular and monastic. The system of convenientiae was not, however, simply a phenomenon of the second half of the eleventh century, for the agreements outlasted the original participants. Their descendants, whether biological or institutional, renewed the arrangements repeatedly, maintaining these structures of power and lordship into the twelfth century. An original exemplar of a convenientia that Dalmau Bernat de Peratallada entered into in 1062 for the castle of Begur stands as a symbol of this phenomenon: in 1114 Dalmau's son, also named Dalmau, subscribed a brief codicil to the text of the first convenientia, promising to keep the same agreement with Ramon Berenguer III. Not all renewals, of course, were on precisely the same terms. The content of these agreements evolved slowly, in response to economic and political developments. As the twelfth century progressed, there were more and more disputes over agreements, and the convenientia lost the near monopoly it had enjoyed in the eleventh century as the written manifestation of structures of power. But overall, the coherence of the structures established in the eleventh century persists deep into the twelfth.