Thanks Wul,
Here are the Clarks who were in Locharbriggs 1800-1841.
Gilbert Clark (1769-1827)   md  Grace Wilson (1775-1832) He was a mason
1. John Clark (1800-1808)
2. Joseph Clark (1805-1835)
3. Isabella Clark (1816-1836)  
4. William Clark (1820-1858)  Have his death  record
There was also a daughter who married John Dunwoodie.
1841 Census of Scotland Locharbriggs  Parish:  ED: 4A; Page:  6; Line: 1305
Clark, James (45)  mason (1796 -8 May 1869)  Have his death record. 
                           He is the son of Gilbert Clark (above)
Clark, Mary  (46)  This is Mary Bell
Clark, Helen (15) 1825-1842  Died at ae 17 Kirkmahoe Memorial
Clark, John   (12)  1829-1886 He is in the Dunfries death index in 1886. 
 All were born in Dumfrieshire, Scotland 
Now I have to figure out if the family below is related to the family above:
1841 Census of Scotland  Locharbriggs  7 June, 1841  
Clark, Thomas  (18)   mason apprentice       
Clark, Jean       (25)                                  
Clark, Janet      (7)                                   
Clark, Isabella   (5)                                    
All born in Dumfrieshire, Scotland
Martha Parker