Starting with the SSDI, we learn
BLANCHE A MUMMA b. 04 Jan 1917, d. 16 May 1991, SS# 027-07-3325, issued in Massachusetts
From the 1930 Census
http://www.mumma.org/1930_NH_Rockingham_Derry_p164.jpg
1930 Census, NH, Rockingham Co., Derry Township, Derry Town, 2 Apr 1930, ED 8-10, p. 164
Rollins, Bert W., Head, owns, $2000, radio, 52, m. age 20, b. NH, Fa: NH, Mo: NH, shoe cutter
" , Viola M., wife, 39, m. age 24, b. MA, Fa: NH, Mo: NH
" , Andrew J., son, 14, single, b. MA, Fa: NH, Mo: NH
" , Blanch A., dau, 13, single, b. MA, Fa: NH, Mo: NH
" , Elvin E., son, 11, single, b. MA, Fa: NH, Mo: NH
" , Doris T., dau, 9, single, b. MA, Fa: NH, Mo: NH
" , Provida E., dau, 6, single, b. MA, Fa: NH, Mo: NH
The 1920 Census provides,
http://www.mumma.org/1920_MA_Essex_Haverhill_p252.jpg
http://www.mumma.org/1920_MA_Essex_Haverhill_p252B.jpg
1920 Census, MA, Essex Co., Haverhill City, Ward 6, 2nd Jan 1920, ED 79, p. 252 & 252B
Rollins, Bert, head, 41, b. NH, Fa: NH, Mo: NH, occ: remnant, trimming
" , Viola M., wife, 29, b. NH, Fa: NH, Mo: NH
" , Izzie, dau, 19, single, b. MA, Fa: NH, Mo: MA, occ: packer, wood? factory
" , Bert W., son, 14, single, b. MA, Fa: NH, Mo: MA,
" , Andrew, son, 4 4/12, single, b. MA, Fa: NH, Mo: NH
" , Blanche, dau, 2 2/12, single, b. MA, Fa: NH, Mo: NH
" , Elvin, son, 1 2/12, single, b. MA, Fa: NH, Mo: NH
Sherwood, Ray F., son-in-law, 21, m. b. MA, Fa: MA, Mo: MA, occ: salesman, clothing store
" , Ethel A., dau, 20, b. MA, Fa: NH, Mo: MA, occ: cementer, ? trimming shop
Blanche had previous marriage and children from these marriages.