Frantisek M. Posekany was born in Cetoraz, a small town in the Tábor region of southern Bohemia, on 16 Oct 1840. I don't have any definite information about his parents or siblings, but there are two other Posekany branches that came from Cetoraz, and there is some evidence that they were related in some way. See the Mystery of the Three Brothers.
Marie Macek was born in the nearby town of Obratan, on 19 Mar 1846.