1.5 Was the release of the Thorium Brotherhood, and 1.6 patterns added (I believe all the FR patterns are from this patch, though would need a little bit of research to be 100% sure, otherwise it is 1.5)
Maraudon was 1.2, though I can understand not worrying too much about since ony is 1.1, if mara is out you're technically starting at patch 1.2 though.
Also Timbermaw recipes were not available until 1.6, and there was a final revamp of the quests at 1.9