It could be Hadeland but I wouldn't attribute it to H. just due to the sign.
Looks kinda like it starts with Hark... or Harle... from the "k" or "l" onwards it doesn't seem to match the "land" ending.
I haven't seen anything like this made by Hadeland from this period.
The green tinge and air inclusions in the glass reminds of me of 19th C. dutch glass.
Besides Norway, Ole Bull lived in Germany, France and USA, for several years in each place, and travelled extensively.
So an attribution based on nationality could be dodgy.
If this piece is in the US it could well have originated there.