Much of the information below on the Hanrahan family comes from Pádraig Kenny, a great-great-grandson of 'unknown's son Michael. Pádraig, who has been hugely helpful to me in my research, has in his possession an old page of notes, found in a drawer, which outlines the family tree of the Hanrahan family in Kilbaha into which a number of my blood relatives married. The notes indicate that Michael's siblings were Denis, Jim, Paddy and Cornelius (Corney), and the information given on Paddy's descendants matches information I came across independently while researching my Cunningham ancestors (Margaret Cunningham, a great-grandaunt of mine, married Paddy's son John). The list of 'unknown's children below is based solely on this page of notes. It is possible that 'unknown' also had a daughter named Ellen as a baptismal record has been located (on www.irishgenealogy.ie) for an Ellen Hanrahan of Kilbaha who married a John Shine in Moyvane on 11 February 1834 .
It is possible that 'unknown's first name was John as at least three of his sons appear to have named their eldest sons John (it was traditional at the time to name first-born sons after the paternal grandfather). A John Hanrahan from Kilbaha who was married to a Mary Sullivan, had at least two children: Ellen (born 1813) and Patrick (born 1818, which ties in nicely with the approximate date of birth shown below for 'unknown's son Paddy, calculated from his age on the 1901 census). Another John Hanrahan and his wife, Bridget Wall, also lived in Kilbaha and had a daughter named Margaret (born 1813) and a son named Patrick (born 1816, again fitting in nicely with Paddy's calculated year of birth). And there was yet another John Hanrahan from Kilbaha; he was married to a Jane or Neasa Kennelly and appears to have had at least four sons: William (born 1826), Daniel (1828), Denis (1833) and Timothy (1835) with the mother's name on the baptismal records (on www.irishgenealogy.ie) of William and Daniel given as Jane and on those of Denis and Timothy given as Neasa.
There was also a Patrick Hanrahan who it is known was living in Kilbaha in the 1820s as baptismal records have been located (on www.irishgenealogy.ie) for two children of a Patrick Hanrahan and his wife, Margaret Mulvihill of Kilbaha: Patrick was baptised on 10 February 1823 and Michael on 24 August 1825.
Note from Helen: Neither my husband nor I are related by blood to the Hanrahan family. However, several members of my family (e.g., Cunninghams) have married Hanrahans or Hanrahan descendants over the generations, hence my interest.