An Albert E Sanders, son of Albert E and Mary Adeline Knight Sanders had a younger brother Wilbert L. Might be who you are looking for. This Wilbur L appears to be a patient in the Worcester State Hospital in 1935 and 1940.
Albert E Sr is the son of Lewis and Louisa (Grant/Gront) Sanders and Mary A Knight is the dau of Benjamin and Clara Baker Knight.
There is more at: https://familysearch.org/
U S Census, 1930 Shrewsbury, Worcester, MA
head Albert E Sanders M 66 VT
wife Mary A Sanders F 61 MA
son Albert E Sanders M 37 MA
son Wilbert L Sanders M 27 MA
grandson Albert E Sanders M 2 MA
U S Census, 1910 Worcester Ward 2, Worcester, MA
self Albert E Sanders M 45y VT
wife Mary A Sanders F 41y MA
dau Velma A Sanders F 19y MA
son Albert E Sanders M 17y MA
dau Carrie E B Sanders F 13y MA
son Wilbur L Sanders M 7y MA
son Horace I Sanders M 3y MA
U S Census 1900, ED 1736 Precinct 4 Worcester city Ward 3, Worcester, MA
head Albert Sanders M 36 b. Mar 1864 VT
wife Mary A Sanders F 32b. Dec. 1868 MA
dau Velma Sanders F 9 MA
son Albert E Sanders M 8 MA
dau Carrie E Sanders F 4 MA
Massachusetts, Births
https://familysearch.org/pal:/MM9.3.1/TH-266-12326-49317-38?cc=1536925&wc=11695090
Albert E. Sanders
Birth 14 Oct 1892 Worcester, Worcester, Massachusetts
Recorded: Worcester, MA (Vol. 423 no. 2328)
father: Albert E. Sanders mother: Mary A.
https://familysearch.org/pal:/MM9.3.1/TH-266-11605-11287-92?cc=1536925&wc=11695159
Velma Augusta Sanders
Birth 14 Jan 1891 Worcester, MA
Recorded: Worcester, MA 1891 (545 no. 21)
father: Albert E. Sanders mother: Mary A. Knight
https://familysearch.org/pal:/MM9.3.1/TH-266-11032-72326-29?cc=1536925&wc=11695089
Sanders, female ? Carrie
titles & terms:
Birth 15 Sep 1896 Worcester, Worcester, MA
Recorded: Worcester, MA 1891 (675 no.
father: Albert E. Sanders mother: Mary A. Knight
Massachusetts, Marriages
https://familysearch.org/pal:/MM9.3.1/TH-266-12579-10122-35?cc=1469062&wc=6961474
Groom Albert E. Sanders
Male 24 est birth 1864 birthplace Chester, VT
father: Lewis mother: Louisa
Marriage 31 May 1888 Worcester, MA
marriage registration Worcester, MA 1888 (459 no. 225)
spouse Mary A. Knight (A= Adeline)
Female Age 20 est birth 1868 birthplace Worcester
father: Benjamin mother: Clara A.
Massachusetts, Springfield Vital Records
https://familysearch.org/pal:/MM9.3.1/TH-267-11694-172663-34?cc=1865477&wc=9163952
Knight Female (appears to be Mary Adeline by dates)
Birth 10 Dec 1868 Springfield, Hampden, MA
Recorded: Spingfield, MA 1868 (66 no. 388)
father: Benjamin Knight birthplace Charlton
mother: Clara Baker birthplace Newton, Upper Falls
US Census 1870 Sullivan, Charlestown, NH
Lewis Saunders M 41y VT
Louise E Saunders F 39y VT
Clarence L Saunders M 16y VT
Chas A Saunders M 14y VT
Geo A Saunders M 13y VT
Elsie M Saunders F 11y VT
Harrison E Saunders M 8y VT
Albert E Saunders M 7y VT
Henry R Saunders M 3y NH