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.
Vyasa
Vyasa appears for the first time as the compiler of, and an important character in the Mahabharata. It is said that he was the expansion of the god Vishnu who came in Dwaparayuga to make all the Vedic knowledge available in written form which was available in spoken form at that time. He was the son of Satyavati, adopted daughter of the fisherman Dusharaj and the wandering sage Parashara (who is credited with being the author of the first Purana, Vishnu Purana). There are two different views regarding his birthplace. One of the views suggests that he was born in the Tanahun district in western Nepal, in Vyas municipality of Gandaki zone of Tanahun district and his name, Ved Vyas, names his birthplace. Another view suggests that he was born on an island in the Yamuna River near Kalpi, Uttar Pradesh, India. Vyasa was dark-complexioned and hence may be called by the name "Krishna", and also the name "Dwaipayana", meaning 'island-born'.