Alas, this site is all in Polish, but it definitely seems to be about my family.
The top painting on this page is Maksymilian Taczanowski, my great-great-great-grandfather, who died in 1852.
The second painting is Alfons Taczanowski (1815-1867), Maksymilian's son. Alfons received an additional title of Count from another country, and thereby became a member of the Prussian House of Lords.
The third painting is Antoni Taczanowski (1849-1917), Maksymilian's grandson, nephew of Alfons, and brother of my great-grandmother Lucia Taczanowska.
The fourth painting is of a man, Jan Taczanowski, who I don't recognize, but I think it's a safe bet that we're related!