Nicolas de Fer, geographer to the French royal court had this to say about Scandinavians in 1708:
“The Swedes are an honest and courageous folk and fond of the arts and sciences. The air of their country is clear, keen and salubrious; their forests are the haunt of numerous wild and ferocious animals. The Danes are more or less the same in their manners and customs as the Swedes. The Norwegians appear to be of a simpler type, and are very frank and ingenuous.” Paul Hazard The European Mind 1680-1715 Yale U Press 1952
I had to look up ingenuous: “(of a person or action) innocent and unsuspecting. See note at GULLIBLE.” at the note under gullible it says, “implies the simplicity of a child without the negative overtones.”
The Chambers Dictionary, 2003:
ingenuous: candid, frank, honourable, free from deception, artless, freeborn
nice…sounds better than the venerable oxford dictionary! :-)