Conrad & Otilie (ROSENVINGE) ELLEFSEN

I am trying to find information on my maternal grandparents, Conrad and Otilie (ROSENVINGE) ELLEFSEN. As I understand, they came to the United States for about 3 years and their daughter, my mother, Lillie (Lilly) Anna ELLEFSEN, according to my mother's Social Security Application, was born in New York, New York, on 18 September 1912. I guess, sometime after she was born, they returned to Norway as she was raised and married to her first husband there. I do not know her first husband's name or anything about him. I have no idea where in Norway they lived, but I do have an older half-sister (Elizabeth LIERFALL, married name, approx. 78 yrs-old) living in the Oslo area. I found one hit on a Passenger ship pay-site for a Lillie Anna ELLEFSEN, but was unable to find it checking other sites and I am unable to pay to access any of the Census records. My mother again came to the USA sometime prior to my birth in 1940 and went by the name of Lillian Elllefsen LANDOLT on her Social Security Application of March 8, 1941. Any help in locating any information on these folks would be gratefully appreciated. Louise Hansonmailto: