Edward Moran

My great grandfather Edward Moran has a Church Baptism Record showing his father Edward, mother Elizabeth (nee Trowbridge) and a date of 25/10/1855. The Baptism is at Booterstown Blackrock & Dundrum and their address is recorded as being "Merrion". Edward had a brother, Thomas, born, I think, a year later whose birth I have not been able to find. By 1861 the family were in Liverpool and had another son Joseph who sadly died when just over a year old in 1862. Further tradgedy struck the family with the death of Eliza in 1864. Edward and Elizabeth (Eliza) were married in January 1855 in Kingstown Registry Office at Rathdown. Their address is Roebuck, parish of Tarney and Edward's father is shown as John Moran, Gardener. Any suggestions for further research would be gratefully received!