Frances G. Vaillancourt, age 54, of Lowell, died unexpectedly on Sunday, August 17 at Saints Medical Center in Lowell. Relatives and friends may call at the M. R. LAURIN & SON FUNERAL HOME, 295 Pawtucket Street, Lowell on Thursday morning, Aug. 21, from 10 to 12pm followed by a prayer service at the Chapel of St. Joseph Cemetery, E. Chelmsford at 12:30pm. Interment to follow.