1910 Census - Fayette County, Pennsylvania
Nicholson TWP - 15 April 1910

  71 71 [3 doors down from Daniel M. and Alverda Provance Davis]
  Provance, Lester  Head M W 22 M1 1     Penn Penn Penn Palaster
  Lizzie            Wife F W 22 M1 1 1 1 Penn Penn Penn
  Claude L.         Son  M W 8/12 S      Penn Penn Penn

1920 Census - Washington County, Pennsylvania
Donora Ward 5 - 27 January 1920

  645 247 284 Fifth Street
  Provance, Lester H.    Head M W 33 M Penn Penn Penn Building Contractor
  Lillian D.             Wife F W 33 M Penn Penn Penn
  Claude                 Son  M W 10 S Penn Penn Penn
  Frank                  Son  M W  7 S Penn Penn Penn
  Dillinger, Mary F.     Aunt F W 75 S Penn Penn Penn

1930 Census - Washington County, Pennsylvania
Hopewell TWP - 2 April 1930

  6 6
  Provence, Lester H.   Head M W 43 M 22 Penn Penn Penn Farm laborer
  Lillian D.            Wife F W 43 M 22 Penn Penn Penn
  Claude L.             Son  M W 20 S    Penn Penn Penn 
  Francis L.            Dau  F W 17 S    Penn Penn Penn
  Franklin J.           Son  M W  9 S    Penn Penn Penn
  Dillinger, Mary ?     Aunt F W 85 S    Penn Penn Penn
  Lenn, Charles A.      Lodg M W 59 S    Penn Penn Penn
  [note: Based on the previous census, I am assuming that the census
   taker interchanged the names of Francis and Frank]