Anna M Anderson, Florence and Hildas mother

Anna M Anderson billing clerk, came from Sweden, my grandfather chauffeur Frank A Hansen from Kristiania in Norway. They got merried dec.11-1924 and have two daugthers in 1929-30, say 1930 cencus in Brookline. Their residence is 36 Orkney Rd Boston After this year they are gone, I can´t find them! The only thing I know is that Frank died in 1963 in Norfolk MA. I have his securitynumber 017-22-3397 thats all! Do anyone know abouth Anna M? Her parents name is Hilda Gustavson and Johan Anderson. I am greatful for all information abouth this family. I have tried in Sweden too, but no response. I don´t know if they stayed put in Sweden or if they followed Anna across the sea. If you know anything, please let me know! Thank you. Wenche