Robert Colgan
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- 1 Robert Colgan [1]
- Rachel Edith Brisbane
- 2 Wellington Woodruff Colgan [1.1] b. 22 Apr 1898 d. 18 Oct 1974
- Grace Mae Smith b. 02 May 1899 d. 27 May 1972
- 3 Thomas John Colgan [1.1.1] b. 17 Feb 1941 d. 12 Jun 2000
- Shirley A. Hart
- 4 Sheila Ann Colgan [1.1.1.1]
- 4 Ian T. Colgan [1.1.1.2]
- 4 Sheila Ann Colgan [1.1.1.1]
- 3 Robert Francis Colgan [1.1.2] b. 06 Sep 1922 d. 11 Jul 2007
- Marguerite LaBombard
- 4 Richard Colgan [1.1.2.1]
- 4 Barbara Colgan [1.1.2.2]
- 4 Mark Colgan [1.1.2.3]
- 4 Audrey Colgan [1.1.2.4]
- 4 Paul Colgan [1.1.2.5]
- 4 Richard Colgan [1.1.2.1]
- 3 Ethelyn M. Colgan [1.1.3] b. 25 Aug 1931 d. 14 Feb 2013
- Ross Merton Lamb
- 4 Wayne Lamb [1.1.3.1]
- 4 Kathy Lamb [1.1.3.2]
- 4 Karen Lamb [1.1.3.3]
- 4 Wayne Lamb [1.1.3.1]
- 3 Bernice Colgan [1.1.4]
- 3 Lester Albert Colgan [1.1.5] b. 06 Aug 1924 d. 1943
- 3 Richard Colgan [1.1.6] b. 06 Sep 1922 d. 1922
- 3 Thomas John Colgan [1.1.1]
- 2 Wellington Woodruff Colgan [1.1]