| 1. Royce Douglas Clapham |
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| B: |
13 Jun 1900 |
| P: |
Woodward County, Oklahoma, USA |
| D: |
30 Jan 1991 |
| P: |
Oklahoma, USA |
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| 2. Arthur Thomas Clapham |
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| B: |
22 Jan 1871 |
| P: |
Wichita, Sedgwick County, Kansas, USA |
| M: |
7 Dec 1896 |
| P: |
Kansas, USA |
| D: |
26 Dec 1942 |
| P: |
Woodward County, Oklahoma, USA |
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| 3. Addie Sibel |
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| B: |
13 Nov 1879 |
| P: |
Iowa City, Johnson County, Iowa, USA |
| D: |
15 Mar 1968 |
| P: |
Oklahoma, USA |
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| 6. John Henry Sibel |
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| B: |
27 Aug 1849 |
| P: |
Ligonier Township, Westmoreland County, Pennsylvania, USA |
| M: |
3 Jul 1873 |
| P: |
Iowa, USA |
| D: |
30 Aug 1926 |
| P: |
Mutual, Woodward County, Oklahoma, USA |
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| 12. Konrad M. Seibel Sibel |
=> |
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| B: |
12 Apr 1822 |
| P: |
Vorderweidenthal, Pfalz, Bayern |
| M: |
13 Aug 1848 |
| P: |
Westmoreland County, Pennsylvania, USA |
| D: |
8 Oct 1898 |
| P: |
Iowa, USA |
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| 13. Anna Catharina Brater |
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| B: |
1831 |
| P: |
Donegal Township, Westmoreland County, Pennsylvania, USA |
| D: |
1862 |
| P: |
Iowa, USA |
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| 7. Martha Jane Brandt |
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| B: |
9 Jun 1855 |
| P: |
Pennsylvania, USA |
| D: |
5 Feb 1933 |
| P: |
Mutual, Woodward County, Oklahoma, USA |
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1900 - 1991 (90 years)