Query on Fulop FELSENSTEIN

Fülöp / Philip Pinchas Felsenstein is on Geni with 3 wives

wife 1 - married in 1851 Rosy Rachel Felsenstein
* 1852 David Felsenstein
* 1855 Nantschi / Nantsche Genendel Felsenstein
* Rosy died prior to 1857

wife 2 - married in 1857 Pepi Peppi Pessel Felsenstein
* 1858 Hani Chaya NN - Izsák
* 1859 Lázár Felsenstein, (born 26/11/1859)
* 1861 Adolf Aharon Fenyvesi
* 1863 Zini Tzinneh Felsenstein
* 1867 Móricz / Móric / Mór / Moritz Moshe Felsenstein
* 1870 Ida Felsenstein
* 1873 Sándor Felsenstein, infant
* 1907 Pepi died

wife 3 - no marriage dates Neti Esther Felsenstein
* 1865 Ignácz / Ignác / Ignatz / Ignaz Felsenstein

Query - he had a child with Neti Esther SEIDNER in 1865 in the middle of his marriage to Peppi Pessel SEIDNER which seems strange. Possibly we have 2 Philip FELSENSTEIN's confused

Can anyone add any information on Neti and son Ignacz?