Searching for parents and siblings of Joh Clendennen b. abt 1704 in Dumfries, Scotland d. abt 1797 in Cumberland County, PA. He married Janet "Jean" Huston and they had six children:

Mary b. abt 1724, PA d. 1805, PA. Married Samuel Calhoun.
Agnes (Nancy Ann) b. abt 1748, d. 1823
John b. abt 1802
William (no info)
Margaret (died young)
Jennie (died young)

The following was sent to me, I have no source for it:

Tax List:
RE: Mary Clendenin m. Samuel Calhoon 1745?  From what I've seen she was a dau of John Clendenin of E Pennsboro.  A Samuel Calhoon did live in E Pennsboro per tax lists.
 
Cumberland County Tax Lists 1750 E Pennsboro
Calhoon not on the page I have with John Clendenin - Could be on another page.
 
1761 Cumberland County Tax List, E Pennsboro
100 un land John Clindening 40 acres cleared 2 horses 3 cows 1 sheep
100 un land Saml Calhoon 33 acres cleared
 
1764 Cumberland County Tax List, E Pennsboro
Clandinning John 100 acres un
Calhoon, Adam 100 acres un
Calhoon, Saml. 100 acres un
 
1771 Same area various years
Clendennen, John 100 W, 40 cleared
Calhoone, Samuel 150 W, 40 cleared
Calhoone, Adam 100, 30 cleared
 
 
Same in 1772, 1773, 1774,
 
1775
Calhoon, Margaret 150W50C
Caldhoon, Adam 150 W 40 C
Clendenning, John 100 L
 
1776
Clandennon, John Jr
Calhoun, Adam
Calhoun John
Calhoun Mary
 
1778
Calhoon, widow
Calhoon John
Clindinin, John
Clindinin, John Junior
 
1779
Clindining, John
Clindining, John Jr
Calhoon, Adam

Any assistance would be greatly appreciated, and I will gladly share anything I have.

Lola