Another important field where contracts most likely were of high significance is in the establishment of long-standing or even semi-permanent social relationships between clearly socially superior and inferior parties, particularly clientele contracts. The similarity between the Irish and Gaulish way to establish noble rank has already been remarked upon above. Comparable similarities seem also to have existed in the mutual responsibilities between noble patron and client. The significance of contractual relations in late prehistoric Celtic laws is also given away by an episode in Caesar's account of the Gaulish Wars, in his description of how Dumnorix, an Aeduan noble, had acquired his vast wealth: "for a great many years he has been in the habit of contracting for the customs and all the other taxes of the Aedui at a small cost, because when he bids, no one dares to bid against him". Even the relationship between nobles and the state was based on contracts in late Gaulish polities, contracts no doubt constructed based on a more general model between lords and their clients: access to property or resources in return for rent.