Born on 13 June 1823, in Ziegellack, Prussia, son of Mathias Klamas and Barbara Sledz. Catholic. Occupation: "Käthner" — in German, a resident and worker of a small rural plot, with a small cottage (Kate) with a barn and a modest area of arable land.
He married three times: on 29 May 1849 to Katharina Pawlowska (21), who died in 1853. On 11 April of the same year (1851 — sic), he married Marianna Lewandowska — née Szezepanski, widow of Peter Lewandowski — aged 31, born in Dombrowken, Marienwerder. She too died, in 1854. Finally, aged approximately 33, he married Barbara Hoffmann — née Mechowska, widow of Jacob Hoffmann — aged approximately 30, in 1856 in Mewe/Marienwerder, Prussia (present-day Gniew).
Johann died in Rakowitz aged 51 on 30 August 1873, at half past ten in the morning, of dropsy (Wassersucht), and was buried on 2 September in Thymau, today Tymawa, Poland.