Grace Whale Meneely asserts that Margaret is the sister of William James Smith.  More information to
corroborate this is forthcoming.

1870 Census - Allegheny County, Pennsylvania
East Birmingham Borough - 21 June 1870

  697 913
  Royer, Margaret   23 F W Keep Boarders  300 Illinois
  ---, Wayward       3 M W Home               Ohio
  Bullock, John     59 M W Laborer            Canada
  Smith, William    23 M W Work Tack Factory  Penna
  Dawson, James     20 M W Laborer            "
  Hogle, Abram      29 M W Work Rolling Mill  "
  Benwaz, Winfield  18 M W Work Nail Works    New York
  Galloway, Julia   10 F W Domestic S.        Ireland
  Shunk, Francis    24 M W Work Glass House   Penna

1880 Census - Allegheny County, Pennsylvania
Pittsburgh District 164 - 10 June 1880

  1007 176 257 Carson St.
  Shunk, L. M.    W F 31     D Paper Store       Ill  Cana Cana
  Jessie          W F  9 Dau   At School         Penn Penn Ill
  Francis         W F  7 ---   ---               ---  ---  ---
  Wenat, Fred     W M 32 Bdr S Works Glass Works ---  ---  Penn
  Hastings, Thos. W M 35 --- S Carpenter         Irel Irel Irel
  Thoburn, Jas.   W M 33 --- D Glass Preferr     Penn ---  ---