I can not locate this Alfred in the 1910 census. There is one born almost the same day but in Asker. I do not think this is the right person.
I know this Alfred did marry a woman named Elise whose last name might have been Arnesen as well. I do not know when or where they married but I do not think they had any children.
I have the grandparents as Johan Arnesen and Kari Syversdatter. I wonder if this means Johan remarried? I will check the other childrens birth records and see what I see.