Surname Saturday, St. Patty's Day edition: Smith from Limerick?

Last year on St. Patty's Day, I wrote that I married hubby for his Irish ancestors. This week I found out, via fam trees on Ancestry with documententation, that hubby's 5th great-granddaddy, William Smith, has a link with Ireland.

William's will, dated April 14, 1786, refers to some property he owns in his homeland:

I give and bequeath to my son William Smith the sum of ten pounds with my right and title to my father's estate in Ireland and ye ten pound note to be paid untill [sic] it can be collected from the book debts.

Brice Smith is buried in Fairfield Cty, Ohio

The elder William Smith had another son, Brice, hubby's 4th-great-granddaddy, who inherited land, bedding, a horse, heifer, money, sheep, and other possessions.
 
Now it's going to be quite a trick to trace Smith family connections to and within Limerick, the place where they are probably from. So many ancestors, so little time!