John P. Keane's family
| Name | Year of Birth | Married to | Address | Occupation |
| Matthew (Max) | 1928 | Miriam O’Donovan of Co. Cork | DunLaoire Co. Dublin | Chartered. Accountant Dundalk, later Dublin |
| David | 1929-2007 | Maureen Duffy | Sutton Co. Dublin |
Architect, Dublin |
| Eithne | 1930-2013 | Brendan Keane | Graystones Co. Wicklow | Married to Bank Manager, Greystones |
| Ronan | 1932 | Terry O’Donnell England |
Dublin | Chief Justice (1999-2004) |
| Brian | 1934 | Dearbhla O’Brien | Dublin | Engineer Dublin |
David Keane
David: Founder of Practice KMD Architecture, Dublin; Fellow (and one time President) of the Royal Institute of Architecture of Ireland (FRIAI); Call to the Bar in 1977, he became an Arbitrator and Legal Expert in Law and Contract; and author of ‘Building and the Law’. (“He did not suffer fools gladly and any foolhardiness on the part of advocate or witness was likely to merit a sarcastic rebuke – always modified, however, by a smile”, Irish Times Obituary, Saturday, October 6, 2007). Trustee, one time Captain and Honorary Secretary, Portmarnock Golf Club, Dublin. Family: Liz (Comyn), Andrew and Michael; Grandchildren: Katherine and Susan. Died of cancer September 28, 2007.
Ronan: The career of the Chief Justice is given on the linked page on Ronan Keane