Hi Barbara, According to the book" Hollidaysburg Records 1836- 1852, Marriages Death and Partitions", compiled by KTH McFarland, page 46 lists a marriiage of Mr. James McKim of Cambria County to Miss Elizabeth Piper of Duncansville on 12/30/1845. So check Cambria County also. there are many Piper families in Duncansville. this is from the 1850 census, it may be your James Name: Mc Kim, James Year: 1850 Gender: Age: County: BLAIR CO. State: PA Page: 180 Location: JUNIATA TWP(Actually looking at the images it is James and Elizabeth on page 181 not 180,son william and daughter Sarah are on page 182, along with what looks like John Piper and Thomas Piper, miners born in England, in the same household, along with a John Mock or Mack a minner born in Ireland. Good luck, terry