In the 1920s and early 1930s, he was the owner of a small restaurant on Rynkowa Street (formerly known as Gnojna) 7 in the Jewish district of Warsaw.
Colonel Wieniawa-Długoszowski (at one moment president of Poland), marshal Piłsudski's personal adjutant, was frequent visitor and many others from Warsaw's high society[2].
He lived with his family at the Rynkowa (Market) Street 7 and had four children: Alicja Ładowska (Davis) (born 15 June 1925), Mieczysław, Ryszard, and Franciszka.
It was notorious enough that a song was written about it in 1934, Bal u starego Joska,[7][8] which remains as one of the most popular Polish underground ballads often sung in the specific dialect of Warsaw's Praga district.
His grandson Ron Davis recorded jazz versions of Bal u starego Joska on his 2010 album My Mother's Father's Song.