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FitzSimon

Also "Fitz-Simon" and "Fitzsimon".

Thomas FitzSimon,
born 1760.
See wikitree.
He mar 1789 to Margaret Callan [born 1771].
He died 1801.
She mar 2ndly, 1806, to Thomas O'Mara and had issue.
Thomas FitzSimon and Margaret had issue:

Christopher FitzSimon, MP,
born 1793,
of Glencullen House (or "Glancullen"), Glencullen, Co.Dublin (in Dublin mountains, near Wicklow border). See street view of entrance.
See wikitree and wikipedia.
He mar 1825 to Ellen O'Connell [born 1805].
He died 1856.
Ellen planned but did not produce a biography of her father Daniel O'Connell. See multiple NLI items.
See pp.219-226 of The Irish monthly, 1883.
She died 1883.
Christopher and Ellen had issue:

1. Ellen FitzSimon,
   born 1838.
   She mar 1stly, 1859, to Charles Bianconi.
   They had issue:
   1. Elizabeth Bianconi,
      born 1861.
      She mar Clement Ryan.
      They had issue:
      1. Mary Grace Ryan,
         born 1892.
         She mar Nicholas Joseph Grene.
         They had issue:

         
         

         1. Alice Mary Grene,
            born 1921.
            She mar John Kenneth Crowther and had issue.

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References

• FITZ-SIMON in [Burkes Irish, 1958, pp.288-290].