I just found a mention of Appolonia Fleckenstein (nee Seibert) on the following webpage:http://freepages.genealogy.rootsweb.com/~davesherry/fleckenstein-website-english.htmhttp://freepages.genealogy.rootsweb.com/~davesherry/fleckenstein-website-english.htm You can copy the above URL and paste it into your browser.Go about halfway down the page, to use above the heading "The Fleckenstein Aristocracy."The two citations above that heading mention Appolonia.They are: 1848 Franz Heeg took over what is called Berteshof in our time, after its last possessor Engelbert Heeg` through his wife Theresa, born Fleckenstein, from her parents Adam Fleckenstein (former municipality chief) and Appolonia, born Seibert. 1848 after the death of Adam Fleckenstein a retirement house is built for his widow Appolonia at Schöllkrippener Str. 11, corner of Seusstraße. I hope this is your Appolonia!