Henry Erskine CLARK m. Ann POWEL
children:
  Sarah Powel       c. 15 Apr 1804  Greenock East
  Alexander         c.  3 Mar 1805  Greenock East
  Margaret Erskine  c.  4 Apr 1807  Greenock East
  Henry Erskine     c. 11 Oct 1809  Greenock East
  John P            c. 17 Feb 1811  [prob. died young]
  John              c.  5 Nov 1812
  Anne              c. 13 Jul 1815  [marr. John SMITH?]

Sarah Powell CLARK m. William SCOTT
  3 Jun 1837 at Port Glasgow, Renfrewshire

Source:  Vivienne Dunstan, of St. Andrews, Scotland, over the Internet,
researching Renfrewshire records.