Anton GREGOR

[Federico]

no traces of Henriette-Juliana GREGOR between 1843 to 1855 and 1857 to 1863
Remains years 1842 and 1864 to 1878 (Henriette 100 years old?)

[Federico]

no traces of Henriette-Juliana GREGOR between 1842 to 1873
Remains years 1874 to 1878 (Henriette 100 years old?)

[Werner52]

Then Henriette Diane must have moved away. Or you overlooked her. Going through 30 years of Vienna death records is a lot of work. It would be more than understandable to overlook an entry.

[Federico]

I'll check up to 1878, hoping she died before 100! Then I'll look at marriages between 1841 and 1845, in case she married late in life.