Denis O'Brien

UNKNOWN -

• Name	Denis O'Brien
  Birth	UNKNOWN
  Gender	Male
  Person ID	I11117	Branches and Roots
  Last Modified	13 Feb 2026

  
  

  Father	William Peter O'Brien,   b. 9 Nov 1892, Warrenpoint, County Down, Ireland d. UNKNOWN
  Relationship	natural
  Mother	Lilian Harris,   b. Abt 1894   d. 27 Dec 1978 (Age 84 years)
  Relationship	natural
  Marriage	UNKNOWN
  Family ID	F3783	Group Sheet  |  Family Chart