Dimitrios' brother, Panagiotis Papatsonis, was also a member of the Filiki Eteria. After the death of his brother, he became commander of the military force that was under the leadership of Dimitrios. He then participated as a representative in the Third National Assembly at Epidaurus (1826) and the Third National Assembly at Troezen (1827). From June 1827 he was a member of Parliament until its dissolution in January 1828. In 1841, he was elected mayor of Eva, Messinia, a position he held until 1862, while at the same time he was elected member of parliament for Messinia in every electoral contest from 1844 to 1861, except in 1850. After the exile of King Otto, he was not re-elected. He died in his hometown in 1888. His memoirs contain a lot of information about the family and the history of the region, while also describing in detail the Fall of Tripolitsa, the Battle of Valtetsi, and other military operations in which he participated.