Start your family tree now Is your surname Hennessey?
There are already 62 users and 1,589 genealogy profiles with the Hennessey surname on Geni. Explore Hennessey genealogy and family history in the World's Largest Family Tree.

Hennessey Genealogy and Hennessey Family History Information

‹ Back to Surnames Index

Create your Family Tree.
Discover your Family History.

  • Build your family tree online
  • Share photos and videos
  • Smart Matching™ technology
  • Free!
view all

Profiles

  • John J. Hennessey (1921 - 2001)
    John Joseph Timothy Hennessey (August 20, 1921 – March 20, 2001) was a United States Army four-star general who served as Commander in Chief, United States Readiness Command (USCINCRED) from 1974 to ...
  • Margaret Ellen (Ellen) Cashman (1837 - 1913)
    Margaret Ellen Hennessey Cashman Find A Grave Memorial# 95573589Margaret Ellen Hennessey Cashman BIRTH 1837 DEATH 1913 (aged 75–76) BURIAL Immaculate Conception Cemetery Jones County, Iowa, USA MEMORI...
  • Hennessey (1814 - d.)
  • Joseph Hennessey (deceased)

About the Hennessey surname

My family starts with Bryan Rourke (convict) who married Mary Ann Kirwan (convict) in 1815 in Ireland. They had a daughter Mary Ann Rourke Jr who married Patrick Hennessy in 1844 in Sydney. Patrick had a son John Polding who married isobel McGill in 1865. Are we related. Carlene