From the Hungarian Wikipedia page [1]
John Mecséri (Győr April 18, 1920-Budapest Prison House November 15, 1958), Hungarian army officer, took part in the 1956 revolution, he was later sentenced to death and executed.
Mihály Mecséri and Erzsébet Maár. After completing the six elementary classes, he became an archer, and in 1939 he was a specialist. In 1941 he entered the MSZDP, and in 1943 he became a member of the Vasasszakszervezet. In 1944 he was called up as a soldier and was taken to the front line in 1945. In March he escaped with one of his associates and then fell into a US warship. After returning home, he settled in his former workplace. In 1948 he volunteered to attend the officers' school, after completing the course at the rank of Esztergom and Tata. In 1954 he was appointed commander of the 7th Mechanized Division in Esztergom. At the time of the revolution, he sent several units to Budapest, while in person himself in Esztergom, in order to reclaim the buildings occupied by the insurgents. On October 30, he was assigned to Budapest, where he did not receive any clear instructions, so Pál Maléter visited the commander of the Buda district the following day. For the first time, he occupied the ÁVH buildings, and on November 1 he closed the roads leading to Budapest on a higher order. The next day he was appointed Commander of the Governmental Guard and at the same time he was the commander-in-chief of the Juta-hill. On November 3 the Soviets, as the commander of the Hungarian delegation, were disarmed and captured. Later they released the Hungarian authorities, when on 14 August 1958 he was sentenced to death on the charges of antitrust organization and was suspended on the 15th of November at the Collective House. His rehabilitation took place only after the change of regime, in 1990 the President of the Republic appointed a posthumous deputy lieutenant. His grave is in parcel 301 .
His wife was Etel Németh, whom he married in 1946 in Győr.