Write to the vital records office in Westerly, CT and get a copy of your mom's birth certificate. If your not sure where to write, go to http://www.vitalrec.com/http://www.vitalrec.com/. The certificate will give you your moms parents names. On ancestry.com, there is a 1948 city directory for Westerly, RI that has a bunch of Lanphear names in it. There you can get the occupation and where they lived. If you don't belong to ancestry, give me their names and I will look them up for you (if they lived there in 1948). There are 10 families listed with that spelling.