Claim: Christoffersen is a popular name in Denmark, with three spelling variants being the 53rd, 83rd and 205th more popular surnames and in Norway Kristoffersen is the more common form, but Christoffersen is also found.
Evidence: In Denmark, the three spelling variants are the 53rd, 83rd, and 205th (respectively) most popular surnames. In Norway, Kristoffersen is the commoner form, but Christoffersen is also found.