Looking for Flaherty/Faherty ancestors

I am looking for my ancestors in Galway.  Would like to know the dates and ship of immigration.  Would like more family history, I'd like to find birth & marriage records for John Faherty & his father Morgan.

My name is Flaherty, but we believe the family name might have been Faherty in Ireland.

John Faherty & Margaret Wallace

John A. Faherty
 b.  about  1840
 m.  16 Jan 1865  Ballynakill Parish, Renoyle, Clifden, County Galway, Ireland

 * Age 25 when married in 1865
 * John was living in Glassillaun, County Galway, Ireland when married in 1865.

Margaret Wallace
 b.  1840 – 1850 ?
 m.  16 Jan 1865
     Ballynakill Parish, Renoyle, Clifden, County Galway, Ireland

* Living in Dawros More, County Galway, Ireland which is a part of Letterfrack when married in 1865
* Her father was Peter Wallace, a farmer
  Her grandfather was William Wallace

Children of  John & Margaret Faherty:
All born in Dawros More, County Galway, Ireland which is a part of Letterfrack
  Bridget   18 May 1868
  Thomas    26 Dec 1870
  Michael    1 Dec 1873
  Anne      10 Jun 1876
  Kate      26 Nov 1880 (Katherine?)  Immigration Yr: 1892
  Stephen   01 Dec 1882
  Margaret  04 Oct 1886

Notes and Comments:
* Came to America about 1890? ? just speculation
* Stephen carried Margaret off the ship because she did not have shoes.
* Bridget and Anne stayed in Galway (presume already married?)
* It may be that the children came to America, and then the parents (John & Margaret) followed later?

Morgan Faherty & Unknown <== Father of John Faherty

Morgan Faherty
  b.   about  1815 County Galway, Ireland
        based on his son John being 25 when married in 1865

Notes and Comments:
* All that we know about Morgan is that he is listed as the father on his son’s marriage record in 1865.