It also is good to read up on the lands of Faerun to see how the different dieties are revered and worshipped in different lands.
Unlike the racial dieties -- the Seldarine have all the same members wherever there are elves, the dwarven pantheon where there are dwarves, etc. -- the Human gods each have their places of popularity and reverance throughout the kingdoms, and the "pantheon" is larger or smaller.
For example, for Rozor, I chose his place of origin as Sembia, this has not only played into his personality in other ways -- his almighty dollar mentality, his struggling against a distrust for elves, etc. -- but also in my intention for him to be a Tymoran follower. Tymora has one of the strongest holds in Sembian culture.
The Northmen tend to follow Tempus, Chauntea or Umberlee, if they are from the Moonshaes. If they are from the main continent in the North, then much more of the pantheon has reached their culture. Still, the Northmen are a (relatively) primitive people (think Vikings, which is what Northmen essentially are modeled after). The dieties which have the strongest foothold in the North are the more ancient, natural and war dieties. Innovation and invention are not a strong suit in the North, which I think you yourself kind of indicated in your question, but for this reason, Gond has, at least in the FR sourcebooks, not made his way into the North.
As Cret said above. Northmen who are dedicated to labor and hard work would possibly revere Chauntea for that aspect, as much of their labor revolves around building for agriculture, and fishing in the coastal areas.
Angel and I have a good PDF (2nd ed) sourcebook on the Northmen that we can either share with you, or Angel would probably share the download link if I can get her to pull it off her bookmarks
There is also content on the various human subraces, Northmen included, on myth-drannor.net, and in the Races of Faerun 3rd edition sourcebook.... but you gotta pay for that one.