William H. Allen, b around 1826 in VA; m. Leannah/Leona (last name unknown) also b. in VA.
William and Leannah's children:
Mary Roberta (Bertie) b. 1853 in Georgetown, DC; m. John W. Poore, son of Francis and Mary E. Poore in DC. Children - William R., 1873; Edward F., 1875; Jesse S. 1878; David C., 1880; John W., 1883; George A., 1884; Frederick A., 1887; Ethel V 1891; Arthur F. 1894. All children born in DC.
John D., b. 1853 in DC Annie D, b. 1853 in DC Georgie W., b. 1857 in DC Minnie V., b. 1859 in DC Jennie, b. 1864 in DC Emma, b. 1864 in DC
William (28) laborer, and Leannah (24) appear in the 1850 Fed Census for Georgetown DC as married within the year.
The family appears in the 1860 census as a unit:
W. H., 34, MW carpenter, RE $1,000; PE $200, birthplace DC Leona, 32, FW, Birthplace VA Roberta, 9, FW, b. DC J. D., 7, MW, b. DC A. M., 7, FW, b. DC G. W., 3, MW, b. DC M. V. 9 mo., FW, b. DC
William's wife appears as head of household in the 1870 Fed Census for Georgetown DC (p. 508, lines 5 - 12). William does not appear in that census. We assume he died between 1864 and 1870.
Our connection is through the marriage of Mary Roberta to John W. Poore