Family: George Michael Gropp / Mary Margaret Mattingly (F16962)
m. 15 Jun 1948
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 | William Easton Mattingly (1866-1922)
|
 | Addie Anderson (1868-1929) |
| William Thomas Mattingly (1890-1951) |
| Martin Earl Mattingly (1892-1985)  |
| James Carl Mattingly (1895-1951) |
| George Michael Gropp (1911-1985) |
| Mary Margaret Mattingly (1910-1989)
|