Ancestors from Drøbek

I have traced my great great grandfather, and a woman listed as his housekeeper (in a 1900 census, Larvik, Norway) to Drøbek. They are both listed as being born there. My great great grandfather's name was Alexander Henrik Struck(born 1848), and the woman is Maren Helene Samuelsen(born 1836). I wonder if anyone knows anything about them, or could suggest a place for me to search (web site)? Unfortunately, I cannot read Norwegian, and this has hurt my search a great deal. Jennifer Struck