Johanna Henrietta Walker
1858 - 1939 (80 years)
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| Fred P. Martens | |
| B: | 1878 |
| Germany | |
| D: | 1934 |
| Rockwell City, Calhoun, Iowa, United States | |
| George Vincent Martens | |
| B: | 1908 |
| Calhoun, Harrison County, Iowa, United States | |
| D: | Yes, date unknown |
| Jerry Charles Martens | |
| B: | 1939 |
| D: | 2015 |
| Donald Francis Martens | |
| B: | 2 Jul 1909 |
| Calhoun, Harrison County, Iowa, United States | |
| D: | 14 Feb 2000 |
| Calhoun, Harrison County, Iowa, United States | |
| Ina Marie Warbis | |
| B: | 1 Mar 1912 |
| Calhoun, Harrison County, Iowa, United States | |
| D: | 3 Feb 1998 |
| Calhoun, Harrison County, Iowa, United States | |
| Ann Louise Martens | |
| B: | 1 May 1948 |
| Lake City Iowa | |
| D: | 31 Dec 1992 |
| Rockwell City, Calhoun, Iowa, United States | |
| Paul Leroy Martens | |
| B: | 6 Sep 1916 |
| Calhoun, Harrison County, Iowa, United States | |
| D: | 3 Mar 2005 |
| Margaret Evelyn Martens (nee Thompson) | |
| B: | 2 Nov 1919 |
| Kensett, Worth County, Iowa, United States | |
| M: | 15 Jan 1945 |
| Fort Dodge, Webster County, Iowa, USA | |
| D: | 17 May 2005 |
| Stephen Floyd Holder | |
| B: | 1 Aug 1948 |
| Arnelda Kay Holder (nee Poulson) | |
| B: | 4 Feb 1949 |
| Lake City, Calhoun County, Iowa, USA | |
| M: | 17 Jun 1967 |
| D: | 22 Nov 2006 |
| Lytton, Calhoun County, Iowa, USA | |
| Lauretta Mercedes Holder (nee Martens) | |
| B: | 29 Jun 1920 |
| Logan Township, Calhoun, Iowa, United States | |
| D: | 11 Apr 2008 |
| Floyd Ray Holder | |
| B: | 26 Jun 1920 |
| Gladbrook, Tama County, Iowa, USA | |
| M: | 24 Jun 1946 |
| D: | 12 May 1999 |
| Charles Louis Martens | |
| B: | 5 Nov 1880 |
| Germany | |
| D: | 15 Jul 1978 |
| Rockwell City, Calhoun, Iowa, United States | |
| Loretta A Fickbohm | |
| B: | 13 Oct 1882 |
| Jo Daviess, Illinois, United States | |
| M: | 3 Mar 1906 |
| D: | 1 Apr 1971 |
| Rockwell City, Calhoun, Iowa, United States | |
Unknown
| George Martins | |
| B: | 22 Sep 1882 |
| Chicago, Cook, Illinois, United States | |
| Henry Theodore Martens | |
| B: | Feb 1884 |
| Jones, Iowa, United States | |
| D: | 29 Nov 1932 |
| Fonda, Pocahontas, Iowa, United States | |
| Bertha Henrietta Martens | |
| B: | 11 Nov 1885 |
| Onslow, Jones, Iowa | |
| D: | 18 Feb 1923 |
| Rockwell City, Calhoun, Iowa, United States | |
| William John Martens | |
| B: | Jan 1888 |
| Iowa, United States | |
| Albert Bernard Martens | |
| B: | 7 Oct 1891 |
| Rockwell City, Calhoun, Iowa, United States | |
| D: | 3 Apr 1956 |
| Inyo, California, United States | |
| Walter Theodore Martens | |
| B: | 27 Mar 1894 |
| Calhoun, Harrison County, Iowa, United States | |
| D: | Aug 1964 |
| Johanna Henrietta Walker | |
| B: | 23 Mar 1858 |
| Schleswig-Holstein, Germany | |
| D: | 1939 |
| Rockwell City, Calhoun, Iowa, United States | |
| Peter Friedrich Martens | |
| B: | Jan 1851 |
| Germany | |
| D: | 1904 |
| Iowa, United States | |