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UPDATED: 14 September  2026

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First Name:   Last Name:   ID:  

Family: John Gannon / Catherine Slaven (F46331)

• Male John Gannon

  
  

  Birth
  Death
  Burial
  Marriage
  Father
  Mother

  
  

  Female Catherine Slaven

  
  

  Birth
  Death
  Burial
  Father
  Mother

  
  

  Female + Clara Mary Gannon

  
  

  Birth	17 Jul 1887	Brockport, Monroe, New York
  Christening	31 Jul 1887	Brockport, Monroe, New York
  Death	Yes, date unknown
  Burial
  Spouse	James Houlihan | F46330
  Marriage	16 Aug 1908	Rochester, Monroe, New York

  
  

  Male John Joseph Gannon

  
  

  Birth	10 Dec 1888	Brockport, Monroe, New York
  Christening	13 Jan 1889	Brockport, Monroe, New York
  Death	Yes, date unknown
  Burial

  
  

  Male Harold Henry Gannon

  
  

  Birth	9 Apr 1891	Brockport, Monroe, New York
  Christening	26 Apr 1891	Brockport, Monroe, New York
  Death	Yes, date unknown
  Burial
  Spouse	Helen C. McAlpine | F46341
  Marriage	5 Oct 1916	Rochester, Monroe, New York

  
  

  Male James Horace Gannon

  
  

  Birth	9 Apr 1891	Brockport, Monroe, New York
  Christening	26 Apr 1891	Brockport, Monroe, New York
  Death	Yes, date unknown
  Burial

  
  

  Female Margaret Ethel Gannon

  
  

  Birth	29 Nov 1895	Brockport, Monroe, New York
  Christening	15 Jan 1896	Brockport, Monroe, New York
  Death	11 Dec 1963
  Burial		Rochester, Monroe, New York
  Spouse	John Balt | F46339
  Marriage	2 Aug 1919	Rochester, Monroe, New York