Complex sentence: In September, 1926 Pilecki became the official owner of his family's ancestral estate near the town of Sukurcze and developed a reputation as a prominent social worker and amateur painter.
Split into simpler sentences: In September, 1926 Pilecki became the owner of his family's estate near the town of Sukurcze. Pilecki developed a reputation in the community as a prominent social worker and amateur painter.