Mildred was born on 21 APR 1928 in South Dakota USA, the daughter of Anton John Gibbens and Louise Edith Barrone.
She died in Casper, Natrona, Wyoming USA. The date is not known.
Her husband was Howard Leroy Heitkamp Sr. They were married, but the date and place have not been found. They had no known children.
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| Event | Date | Details | Source | Multimedia | Notes | ||
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| Birth | 21 APR 1928 |
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| Death |
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