Two separate stories about legal contracts/systems, in the same location and during the Middle Ages (Kingdom of Navarre - it had other names during the Middle Ages but the political entity was the same).
Story the first:
I really need to look up this article, since the newspaper that published it has made all its archives available electronically. Local newspaper Diario de Navarra publishes articles on any Doctoral Thesis presented at the local universities. About twenty years ago, there was one on the subject of “Marriage Disputes in Navarre before the Council of Trent”. There had been other Councils of the Church which made a call for priests to witness and record weddings, but after this one it actually became common. So his question had been: what kind of marriage issues had been brought before Church judges before that change took place and how did they get solved? Trent took place in the 16th century.
He found 13 cases. In all of them, the suitor was a woman saying that a certain man was her husband and therefore could not become a monk/marry a different woman. In most cases they lived in the same village, but not always (there were cases where each of them lived with and cared for elderly parents). The Judge went there and called up everybody in the village(s) where suitor and defendant lived. In general, the questions were along the lines of “do you know them?” “have you ever known them to court?” “have you known them to be man and wife?”
In one case, the trial was cut short. Once everybody was together in the village square, the judge called both parts forward. The woman had three children with her. The judge looked at them. Looked at the man and the woman. Looked at the congregation in general. Looked at the documents he had. Asked “sir, it says here that you are an only child, that your parents were also only children, that you have no known male cousins nor brothers?” “Yes Father” “In that case I fail in her favor, as I can’t see how could three children look so much like you and not be yours.”
Story the Second:
Sancho VII the Strong was the last king of the first Navarrese dinasty. When he died without surviving issue, the throne went to a nephew, Thibault of Champagne, called el Trovador, the Poet. This took place in the 13th Century.
Thibault knew that local laws were different from those to which he was accustomed, so he asked for copies of the local legislation that he may read it and become familiar with it. Oops. Uh… written? As in, on parchment? Uh…
Some things were, indeed, in writing, but these were a combination of minutes from Parlamentary Meetings and of special laws given to specific locations (such as “Fueros de Fundación”, given to a new village started by the King, with some parts having a pre-defined limited life and others specifically prepared to change as villagers saw fit). A lot of things changed from valley to valley, village to village. “So how do you muddle through this?”, asked the King. “Well, when there is a dispute, people go to see a wise man or woman, who may be a man of the cloth, or a rabbi if they’re Jews, or a healer, or their lord… and if they can’t solve the dispute they go together to see someone else.” “And eventually to me.” “Well, yes, if they can’t solve it, yeah.”
Since aspirin hadn’t been invented yet, what Thibault did was perform the first Compilación de los Fueros de Navarra, the first Collection of Navarrese Laws, by speaking (himself or his scribes) with as many “wise folk” as could be located, asking them about situations they’d been called to solve, posing other situations to them, etc. For the previous milennia, those who hadn’t been subject to Roman Law had been muddling along more-or-less merrily on the wisefolk system - writing, what for? (Romans had a dual-law system, where if any part was a Roman the situation would be subject to Roman law, and if everybody was from “group C” it would be subject to “group C” laws, and if they were from different groups but none of them a Roman then they better start by agreeing which legal system applied…).