ocuments submitted at the marriage of Barend
and Maria Martha:https://familysearch.org/pal:/MM9.3.1/TH-1-17699-107926-93?c...
page 780: Burial extract of Lena de Jong:
Buried 27 Apr 1799 at Leyden
page 781 I am sure there is more to be found
I (or someone) will look at it at some
It seems probable, that your family is from Leiden, ZH.
Have fun, Luke