Kathleen Agnes Kennedy Marchioness of Hartington 1920–1948 William John Robert Cavendish Marquess of Hartington 1917–1944 | | | | Joseph Patrick Kennedy 1888–1969 Rose Elizabeth Fitzgerald 1890–1995 | | | | Patrick Joseph Kennedy 1858–1929 Mary Augusta Hickey 1857–1923 | | | | Patrick Kennedy 1823–1858 | | |
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| | | John Francis (Honey Fitz) Fitzgerald 1863–1950 Mary Josephine (Josie) Hannon 1865–1964 | | |
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