Hval Family (translation help needed)

Hello, I'm looking for help translating and interpreting this information from the census of 1900. If anyone can help with the occupations, and any information about the birthplaces? Ole K. Hval (Hval refers to Hvalsmarken I believe, is that plausible?) Occupation: Samlagsforstander (forstand is intellectual?) Birthplace: Haug Bu (Also have seen Norderhaug as his birthplace, pretty sure the Bu means Buskerud?) Thomas Bjerk (Bjerk refers to Hære Bjørka I believe, is that plausible?) Occupation: Bedstefader(grandfather?)/Rentenist(?) Birthplace: Eker Bu Thanks for any help, Frank