Egan OR Eagan, William and descendants

I am seeking additional information on my 3rd ggrandfather:

William Egan (Eagan)

Born 1788 Urlingford Parish, County Kilkenny

William married Mary Croak and they had 5 children, all born Urlingford:

Patrick - 14 Nov 1809

James - April 1812  my 2nd ggrandfather

William – August 1814

Margaret – 1817

Michael – 30 Sept 1823

Patrick, James & William all emigrated to US, settling in Wappinger Falls and Poughkeepsie, NY.  They all married women named Catherine and had large families.  William emigrated in 1849, apparently after his wife died but I can’t document this.  I have no information for Margaret or Michael.

The baptism certificate for James is dated 04 April 1812.  Sponsors: John Dalton and Mary Egan.  James arrived in 1839, age 27 and married Catherine Shields in 1845 in Wappinger Falls, NY.  He worked as a stone mason.  They had 8 children all born Wappinger Falls.  Catherine was born circa 1822 (US Census says her parents from Ireland so assuming she was born Ireland) and came to the states (according to family letters) when she was 12.  I have no further information for her and have not been able to find a marriage certificate.  James died 05 April 1894.  Catherine died 29 Sept 1904.