Tom, I'm not sure whether this information will be helpful but... I have a Sophie Lippert d/o Valentin who married Michael Staab about 1863 in or near Heigenbruecken, Aschaffenburg, Bavaria. They had my gr-grandfather, Bartholomeus (b. 24 Aug 1854 in Heigenbruecken but not baptized until 1863 ("legitimized") implying that his parents were then married.Their other children were Zita b. 14 May 1857 (probably also illegitimate), Franz Heinrich b. 4 Aug 1864, Wilhelm b. 24 Jan 1868 and Joseph b. 8 June 1871. All this information comes from the local church records: the small chapel of St. Wendelin in Heigenbruecken, courtesy of a priest in the area who shares a distant ancestry.
Now, these people probably aren't directly related to you but there appeaar to be a number of Lipperts in that area of northern Bavaria. Heigenbruecken is east or northeast of the town of Aschaffenburg in the Aschaffenburg district. Try loooking in that area and good luck!