Michael Szilágyi began his career in his brother-in-law's service as vice-ispán (vicecomes) of Torontál County.
He was the captain of the Belgrade fortress at the Ottoman siege in 1456.
As
Ban of Macsó, he acquired a place among the barons  He is commemorated in the Serbian epic poetry as Mihajlo Svilojević or sometimes "crni ban Mihail", while Ottoman chronicles referred to him as "Kara Mihal.

On 20 January 1458, Matthias Corvinus was elected king by the Parliament.
This was the first time in the medieval Hungarian kingdom that a member of the nobility, without dynastic ancestry and relationship, mounted the royal throne.
Such an election upset the usual course of dynastic succession in the age.
In the Czech and Hungarian states they heralded a new judiciary era in Europe, characterized by the absolute supremacy of the Parliament (dietal system) and a tendency to centralization.
During his reign, Matthias reduced the power of the feudal lords, and ruled instead with a cadre of talented and highly educated individuals, chosen for their abilities rather than their social status.
The Diet appointed Michael Szilágyi, the new king's uncle as regent, because of Matthias' young age.
Throughout 1458 the struggle between the young king and the magnates, reinforced by Matthias's own uncle and guardian Szilágyi, was acute.
But Matthias, who began by deposing Garai and dismissing Szilágyi, and then proceeded to levy a tax, without the consent of the Diet, in order to hire mercenaries, easily prevailed.

Michael Szilágyi resigned the office of regent in August 1459 and was killed by the Ottomans after being captured by Ali Bey Mihaloğlu during the battle near Baziaş in 1460.
Since he was considered a spy, he was tortured and sawed in half.
Michael Szilágyi began his career in his brother-in-law's service as vice-ispán (vicecomes) of Torontál County. He was the captain of the Belgrade fortress at the Ottoman siege in 1456. As
Ban of Macsó, he acquired a place among the barons  He is commemorated in the Serbian epic poetry as Mihajlo Svilojević or sometimes "crni ban Mihail", while Ottoman chronicles referred to him as "Kara Mihal.
On 20 January 1458, Matthias Corvinus was elected king by the Parliament. This was the first time in the medieval Hungarian kingdom that a member of the nobility, without dynastic ancestry and relationship, mounted the royal throne. Such an election upset the usual course of dynastic succession in the age. In the Czech and Hungarian states they heralded a new judiciary era in Europe, characterized by the absolute supremacy of the Parliament (dietal system) and a tendency to centralization. During his reign, Matthias reduced the power of the feudal lords, and ruled instead with a cadre of talented and highly educated individuals, chosen for their abilities rather than their social status. The Diet appointed Michael Szilágyi, the new king's uncle as regent, because of Matthias' young age. Throughout 1458 the struggle between the young king and the magnates, reinforced by Matthias's own uncle and guardian Szilágyi, was acute. But Matthias, who began by deposing Garai and dismissing Szilágyi, and then proceeded to levy a tax, without the consent of the Diet, in order to hire mercenaries, easily prevailed.
Michael Szilágyi resigned the office of regent in August 1459 and was killed by the Ottomans after being captured by Ali Bey Mihaloğlu during the battle near Baziaş in 1460. Since he was considered a spy, he was tortured and sawed in half.
Michael Szilágyi