another person chipped in, here's their take on it.

The note before three of the children says Gestrb, short for "died"
(as Cornelia thought).

I think I got all but one or two words in the paragraph below,

Daniel Wagner was born on the 25th March 1805
in Kuhrhessen in Schorbach, Kreis Ziegenheim, came
to America in year 1834, married in year
1838 with Anna Elisabeth nee Berst [?] He died the 13th May
1890 of old age, his age was 85 years 1 month and 18 days.

Anna Elisabeth Wagner was born 22 March 1813
in Hessheim, Rein Saieon [??], Kanton Frankenthal, came to
America in year 1833, her father died on the [trip?] 20 Jun 183...

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The other interesting bit is the translation of Daniel's baptism certificate on page 19, it gives his parent's names as the veteran John Wagner, and Anna Catharine Oppermann, you've probably seen it already.