Richardson/Ledger families

I am the great-great-grand-daughter of John Richardson of Borrisokane, and Charlotte Ledger of Mota, who married in 1823 and emigrated to Canada in 1825 with the Peter Robinson entourage. John's father was Samuel.  I do not know what Samuel's wife's name was.  It may have been Sarah.  Would any one be able to tell me?  Or the names of their children?   There may have been a Samuel who remained in Ireland.   I know there was John, Ann, Richard, and, I believfe, William, who all came to Canada at later dates. 

John and Charlotte first stayed in Goulbourne with his uncle, William Richardson and wife, Mary, (who went to Canada with ther Talbot Expedition.)    Later, John and Charlotte settled on Allumette Island, where they raised a family , which included my great-grandfather, William Ledger Richardson, who went to the US and returned  for a time, with his wife, Elizabeth Smith Hanson, and two children.  My grandfather, John Charles Richardson, was born in Canada, but later immigrated  with his father and family to the US to homestead there.  My query is for information re John's family in Borrisokane.  I would like to know all the names of the childrem of Samuel and that of his wife.  I am trying to prove a sibling connection to the William Richardson who married Anne Hodgins in Shawville, Quebec, with John, Ann, and Richard.    Would appreciate any help researchers of Ireland Reaching Out can give me.