Actually, I read the Rhine tribunal ruling as saying that the covenant needs to be approved before it can be established.
It doesn't make sense for buildings to be raised, vis sources to be claimed, mundane income to be established, and so on, if the covenant is not recognized first. Otherwise, any existing covenant could then raid those resources, since they don't belong to a recognized covenant.
Also, a covenant is first and foremost a group of magi that are recognized as bound by their pact, and a pact with the tribunal. So any group of magi could present themselves before the tribunal and petition for recognition, even if they don't have any site, library, and covenfolks.
So, the way I see it happening as thus.
Some time before the 1179 A.D. tribunal meeting, the magi (at least most of them) meet and agree to seek found a new covenant together. One of them knows of some potential sites* near Koblenz. So they travel around the tribunal seeking sponsors from each of the established covenants of the tribunal. At the 1179 meeting, they petition the tribunal for recognition. The sponsors express their support and each established covenant announces their gifts. For the next 5 years, the potential sites near Koblenz are investigated, one is selected, the mundane grant are obtained on the forest, and the main site is built (as well as the secondary site). The area is explored for other vis sources. Mundanes are recruited. The books for the library are copied. Five years go by as the character gather those resources, gifts, etc. Saga starts in 1184 as the site is ready enough for the magi to live there.
*[size=85]The potential sites were the forest, a small site within Koblenz itself (where some supports of the destroyed Roman bridge still stand), and the caves below Laach See.[/size]
So each character must have participated in many ways to this process. As I mention before, not all magi need to have been implicated right from the first -- some may have been recruited along the way. For example, Petronius was Gauntleted 7 years before the saga starts. If we think 2 years is a reasonable time frame to gather sponsors from the various covenants, then he will have been involved from the first. Otherwise, his pater may have heard of the effort and proposed to sponsor the new covenant in exchange for the membership of his filius.
So, things could have proceeded as follow:
- 1177 A.D.: Some of the magi meet at Durenmar, at the same time as the special Gauntlet ceremony for Petronius takes place. Aedituus mentions that he knows of a few magical sites in and around Koblenz where he thinks a covenant might be established. The magi agree to try to create a new covenant and split the search for sponsors amongst themselves. They receive support from some senior magi (including Petronius' pater Octavius).
- 1179 A.D.: At the Tribunal meeting, the petition for a new covenant in the Rhine Gorge is brought forward. Since Treverorum has been destroyed 7 years before and no other covenant exists in the area, it is deemed appropriate to keep an Hermetic presence in the region. Sponsors announce their support and the other covenants announce their gifts to the new covenant, to be delivered during the years before the next Tribunal meeting. A peregrinator (or another magus/maga with strong Intellego) is hired (or maybe it was one of the gifts) to investigate the different potential sites. Meanwhile, the young magi begin gathering resources for the new covenant.
- 1180 A.D.: The investigation of the potential sites is performed. The results are sent to each of the magi and they meet to discuss the results (this includes 3 different vis sources)**. They argue for a while, and finally settle on the main site in the forest, with a secondary site for additional facilities. Praxiteles arranges for a grant of the forest for us, for a duration of 99 years. The reputation of the forests for being haunted helps him secure this.
- 1181 A.D.: Restoration of the temple begins, with only a few mundanes helping because of the sensitive nature of the statues. Praxiteles is probably in charge of this, since he is a Rego Craft magus. Whoever it is, they get to meet Amelie (wine merchant companion) and Gregor (cooper companion) at this time. Meanwhile, Petronius travels the tribunal to oversee the copying of books promised to the covenant and perform some of the copying himself. He gets to meet Eberhard the scribe (covenfolk) and befriends him while visiting one of the covenants.
- 1182 A.D.: Relationship with Amelie and Gregor are cultivated, and they are approached by the magi. The covenant will provide the initial capital to build each of their business, in exchange for a part of the profits and the special benefits magi can provide (such as longevity rituals). They agree and start setting up the mundane sources of income for the covenant. Full-fledged construction at the main site begins (walls, villa).
- 1183 A.D.: Contruction at the main site is now at its peak. Secondary site is also established at this time. The various lab equipment and supplies begin arriving and are stored until the magi have time to set up their labs. The shared lab is prepared and installed.
- 1184 A.D.: The saga starts.
Again, this is a suggestion and the timeline can be changed and expanded to suit each of the characters. Simply let me know and I'll update it.
**[size=85]I've already detailed one of the (the Vim source at the main site). I will describe 2 more for the other potential sites. A Rego source would make sense for the remains of the old Roman bridge, while Terram/Ignem (or something) else might be appropriate for the caves at Laach See.[/size]