Williams and Clancy

Hi:  I am looking for information on Michael Williams, b. ca. 1761 in LImerick, m. Bridget Clancy before 1811, came to Canada about 1837.  Bridget was born about 1759 in Ardcanny, Pallaskenry.  They had at least three children: (1)  Bridget, b ca. 1811 and came to Canada before 1835; (2) Michael who settled in Pennsylvania; and (3) James, b ca. 1814.  James married Mary Hastings,( b. ca. 1812) and had a son Michael, born in LImerick 1836, before they came to Canada in 1837.   All were Roman Catholic.    I would also appreciate more information on Ardcanny and Pallaskenry if possible.  Thanks.