Avicenna
Avicenna was born in Afshana, a village near Bukhara (in present-day Uzbekistan), the capital of the Samanids, a Persian dynasty in Central Asia and Greater Khorasan. His mother, named Sitāra, was from Bukhara; his father, Abdullāh, was a respected Ismaili scholar from Balkh, an important town of the Samanid Empire, in what is today Balkh Province, Afghanistan. His father worked in the government of Samanid in the village Kharmasain, a Sunni regional power. After five years, his younger brother, Mahmoud, was born. Avicenna first began to learn the Quran and literature in such a way that when he was ten years old he had essentially learned all of them.
Andrea Mantegna
Mantegna was born in Isola di Carturo, Venetian Republic close to Padua (now Italy), second son of a carpenter, Biagio. At the age of eleven he became the apprentice of Paduan painter Francesco Squarcione. Squarcione, whose original profession was tailoring, appears to have had a remarkable enthusiasm for ancient art, and a faculty for acting. Like his famous compatriot Petrarca, Squarcione was an ancient Rome enthusiast: he traveled in Italy, and perhaps also in Greece, collecting antique statues, reliefs, vases, etc., making drawings from them himself, then making available his collection for others to study. All the while, he continued undertaking works on commission, to which his pupils, no less than himself, contributed.