+--William Loughlin HANNIGAN  (6 JUN 1855-25 SEP 1929)
   +--William Joseph HANNIGAN  (4 FEB 1902-2 DEC 1971)
   |  |     +--John MCGOWAN  (bef-0ct-1798-1 OCT 1862)
   |  |  +--John (Jr.) MCGOWAN  (7 JUN 1837-14 FEB 1914)
   |  |  |  +--Bridget L. MURRAY  (BEF MAY 1815-6 APR 1845)
   |  +--Susan Catherine MCGOWAN  (6 JUL 1868-12 FEB 1943)
   |     |  +--Patrick MCCANN  (1803-JUN 1876)
   |     +--Mary MCCANN  (7 JUL 1839-24 FEB 1925)
   |        +--Susan MCCAFFERTY  (-1851)
+--William(Billy) David HANNIGAN  (9 DEC 1932-30 DEC 1987)
|  +--Mary Katherine (Estelle) SWEENEY  (24 JAN 1901-23 DEC 1991)
Theresa Darlene HANNIGAN 
+--Marielle KELLY