William Deckard was the son of Jacob Deckard and Mary (? last name)Jacob was born about 1757 near Metz, France and died sometime around 1942 in Monroe County, Indiana.
William Deckard was born about 1799 in Wythe County, Virginia and died in 1890 at Nianguam, Missouri.William married Elizabeth Emeline Hildenberg in Virginia about 1815.Elizabeth was probably the grandaughter of John Hilgenber and Mary Barbara Shrader, but unsure of this at this time. Children of William and Elizabeth Sophia Deckard b. abt 1832 Indiana John Wesley Deckard b. 9-6-1835 Indiana Polly Deckard b. abt 1838Indiana Elias Deckard b. abt 1839 Indiana Betty Ann Deckard b. abt 1840 Indiana William Deckard Jr b. abt 1841 George Washington Deckard b. 10-10-1842 Wright Co, Missouri Margaret Deckard b abt 1844 Wright Co, Missouri Malinda Deckard b. abt 1844 Wright Co, Missour Henry Green Deckard b. abt 1850 Webster Co, Missouri
So far I have documented some but not all of the above my Deckard research is still in the very early stages.Hope this gives you an idea of where to start.