He was from a noble family, bearing the Jastrzębiec coat of arms; he was born to Jan Kraszewski [pl], a major landowner, and his wife, Zofia Kraszewska [pl], née Malska.
Upon his father's death, in 1864, he inherited the family's estate in Romanów; reconstructing the manor house, which had been heavily damaged by a fire.
He also created an astronomical observatory, with equipment imported from Munich, Berlin, Vienna and Paris, introduced modern farming methods, and built a greenhouse where he grew pineapples.
He left a library of over 10,000 volumes, as well as collections of old prints and manuscripts, historical portraits, and various objects, including weapons.
[1] He was an amateur composer as well; creating music for the piano based on local folk motifs.