Well... I'm very sorry. Thank you for the information.
My great-great-grandfather is known to have lived in Daugavpils (Dvinsk, Dinaburg) in the 1890s. Then he left for the Far East.

I looked through the scans of documents in the Latvian Raduraksti database, but have not found any mentions there ...

Good day.
Yes, I found Stanislaw early in Geneteka Database, the links are correct, thank U Krystina. I searched in all the voivodeships, used all the search options in the database index. And found all childrens Josef Karlowicz, his parents... etc.
Of course, not all the parishes were indexed, but ...

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I am looking for descendants of Józef Walenty Karłowicz (mazowieckie w , 1848 ). It is possible that his son - Stanisław (mazowieckie, 1878 ), is my great-great-grandfather. But all I know about the origin of my grandfather is his name, surname and the name of his father - Joseph/[Iosif ...