He was the Minister of Justice of Poland from 1926 to 1928, the chairperson of the Provisional Governing Commission of Central Lithuania from 1921 to 1922, and a member of the State Council of the Russian Empire from 1909 to 1917.

Aleksander Meysztowicz was born on 8 December 1864, in Pajuostis, near Panevėžys, then located within Kovno Governorate, Russian Empire, and now part of Lithuania.

He was dismissed in 1891, with the rank of lieutenant, and settled in the Pajuostis estate which he inherited from his parents, and devoted himself to agriculture and social activities.

[1][2] In 1900, at the founding of the Kaunas Society of Agriculture, Meysztowicz was elected its vice-chairperson, and in 1904, he was unanimously voted to receive the title of the honorary member.

From his initiative were also founded the Kaunas Mutual Fire Insurance Society, of which he was also the chairperson, and a number of other agricultural unions that served to unite the activities of rural owners.