Ladislaus (also Lack) was born into the prestigious and influential gens (clan) Rátót, as the son of Stephen I ("the Porc"), who was a strong confidant of Queen Elizabeth the Cuman and held several offices in her court since 1265.
[1] It is plausible that Stephen's only known wife Aglent Smaragd was not the mother of Ladislaus; she was still alive in 1327, and was a Beguine nun at the Sibylla cloister in Buda.
[2] Ladislaus had four known brothers: the eldest one, Dominic II was considered actual head of the family and a powerful baron for decades.
"Ágas Castle"), a small fort located in the mountain range of Mátra, which had formerly functioned as the kindred's residence.
[10] His father, the Bohemian king Wenceslaus II met the Hungarian envoys in Hodonín in early August 1301 and accepted their offer in his son's name.
[11] Ladislaus was referred to as treasurer of the queenly court in October 1302 (albeit Wenceslaus had only fiancée, Elizabeth of Töss, who lived in Austria during that time).
[13] Alongside his brothers, Dominic and Kakas, he was present at the national assembly on 27 November 1308 in Pest, where Charles was unanimously proclaimed king.
He gradually lost influence in the royal court since Charles' unification war, where skilled soldiers and military leaders emerged.
In the early 1320s, Ladislaus was embroiled in conflict with one of them, Mikcs Ákos, Ban of Slavonia, who successfully fought against the oligarchs and Charles' other enemies.