Looking for Mullanes & Walls

I recently found out that my 4th great grandmother, Margaret Wall (nee Mullane), her parents were Daniel Mullane and Johanna Cregan from Kileedy, Limerick. When I googled her parents names, I found that she had a sister Ellen O'Hearn (nee Mullane) married to Michael O'Hearn. They got married in Chicago. And also a brother Daniel, who was still in Limerick in 1901.

Anyone have any information on Daniel Mullane (1815-1852) or Johanna (1815-1870)? I just dont know anything on Margaret Wall to go anything further (she married John Wall in 1860 in Kileedy).

Or John Wall?  I don't think he came over with his wife and children, as he's not buried with Margaret or any of his kids.  Margaret and John were married in 1856 in Killeedy. Margaret came over to Chicago between 1880-1883.