You mentioned this Sadie died in 1973.Yours must be another Sadie, but might be related somehow.
I have her obit:
SANTA MONICA EVENING OUTLOOK, PAGE 21; MONDAY, 12/7/1953
BUELL - Sadie Jane Buell, 1124-A 18th Street.Loving mother of Warren C. Buell of Burbank, Howard V. Buell of Santa Monica and Mrs. Sue Perry of Burbank; sister of Miss Mary Catherine Murrin of Santa Monica; also survived by 5 grandchildren.Rosary Tuesday evening at 8 p.m. in the chapel of Moeller, Murphy & Moeller, directors.Requiem mass Wednesday at 9 a.m. in St. Monica's Catholic Church.Interment Calvary Cemetery.
This Buell line did not settle Buellton CA...but it was settled by another Buell from another branch of the family.