What Is The Origin Of Bjurholm?

If you are referring to Bjurholm as a surname, then it is a surname which was certainly derived from a person from Bjurholm in Sweden who emigrated.
It was common for immigrants to use the name of their locality when they arrived in another country, mainly because of language problems and problems associated with illiteracy.
Bjurholm is a very small town/settlement within the northern regions of Sweden.  In 2006 it has a population of less than 3,000 and is quite spread out which makes it the least populated of all Sweden's municipalities.
Due to its position towards the north of Sweden, it is a difficult life for the inhabitants, very dark and cold in the winter and the summers are not particularly warm.  Due to the climate and the difficult living conditions, many people emigrated from Bjurholm, particularly towards the end of the nineteenth century.