His grandfather, Józef Pilecki, was an aristocrat and Polish-nationalist who had been a supporter of the secessionist Polish National Government during the January Uprising of 1863-1864.
His grandfather, Józef Pilecki, was a Polish aristocraft, a member of the gentry and a strident Polish-nationalist. He had been a supporter of the secessionist Polish National Government during the January Uprising of 1863-1864.