Although Gáspár Heltai writes that Hunyadi was born in 1390, he must have actually been born between around 1405 and 1407, because his younger brother was only born after 1409, and a difference of almost two decades between the two brothers' age is not plausible.
Meskipun Gáspár Heltai mencatat bahwa Yohanes lahir pada 1390, ia tentunya lahir antara 1405 sampai 1407, karena adiknya baru lahir sesudah 1409, sehingga agak tidak masuk akal jika selisih umur mereka terpaut dua dasawarsa.