- Mar 10 Ferdinand I, Holy Roman Emperor (1558-64) who organized defense against the Ottoman invasion, born in Alcalá de Henares, Castile (d. 1564)
- Mar 19 Benedetto Varchi, Italian humanist and historian (Storia Fiorentina), born in Florence (d. 1565)
- Mar 22 Antonio Francesco Grazzini, Italian writer (d. 1583)