One clarification regarding the settlements in northeastern America:
- The toponym 'Terra Nova' originally applied to the island of Terra Nova (OTL Newfoundland), but later this was extended to the rest of the 'new continent'. Anyway, the island retained this name and also the duchy it formed.
- At first, the Roman-Norwegian expeditions did not consider they were exploring a whole new continent but 'islands in the Far North' (Iceland, Greenland...Helluland, Terra Nova) and also considered that Vinland and Markland might be just parts of major islands. The discovery of the lake Marian (Ontario) in 1132 changed this perspective and suggested that, at least Vinland was part of a large landmass, and not just a huge island.
- Until then, the Terra Nova was not considered 'a colony' in OTL Age of Explorers sense, just another duchy with the peculiarity of being distant and which settlement and exploitment was shared with the skilled Norwegian travellers. But remember that at the same time other Pagan and underpopulated territories were being settled in the core of Europe. For the Romans there were no much difference between Terra Nova and let's say Prussia or Masuria (Pagan, low populated uncivilized territories up for settlement and evangelization). Once christianized, they established autonomous duchies, not colonies.
- Thus, by 1132 there is no sense of colonization or discovery of a new world like IOTL 16th century. Just settlement of new territories in the borders of the Empire. Even the realization that Vinland would be a 'continent' does not change this idea, just the geographical perspective. The territories settled until this moment do not boost any 'gold/silver/fortune fever': they provide some profitable goods like fur, whales, walrus ivory...but this does not boost an acceleration of the exploration as the Roman/Norwegians do not expect to find any Eldorado there. This is why the exploration of the Terra Nova is kept at low pace.