Rospigg is a person from Roslagen

Roslagen

Roslagen is the name of the coastal areas of Uppland province in Sweden, which also constitutes the northern part of the Stockholm archipelago....

. The name origins from the old swedish word "rosbyggiar" - inhabitant in Roden

Roden, Sweden

Roden old designation of the coastal areas of Svealand , that in wartime would mann and equip the ships that sailed out in ledung....

. The word has thus nothing to do with the word "pigg" which is the swedish word for "quill".

Rospigg is also an alternative name for the boat type "Roslagsskuta".

The word is also used in the name for the speedway team "Rospiggarna" in Hallstavik.