Passage: William Jones was born in London at Beaufort Buildings, Westminster; his father William Jones (1675–1749)  was a mathematician from Anglesey in Wales, noted for introducing the use of the symbol π. The young William Jones was a linguistic prodigy, who in addition to his native languages English and Welsh, learned Greek, Latin, Persian, Arabic, Hebrew and the basics of Chinese writing at an early age. By the end of his life he knew eight languages with critical thoroughness, was fluent in a further eight, with a dictionary at hand, and had a fair competence in another twelve.Jones' father died when he was aged three, and his mother Mary Nix Jones raised him. He was sent to Harrow School in September 1753 and then went on to University College, Oxford. He graduated there in 1768 and became M.A. in 1773. Financially constrained, he took a position tutoring the seven-year-old Lord Althorp, son of Earl Spencer. For the next six years he worked as a tutor and translator. During this time he published Histoire de Nader Chah (1770), a French translation of a work originally written in Persian by Mirza Mehdi Khan Astarabadi. This was done at the request of King Christian VII of Denmark: he had visited Jones, who by the age of 24 had already acquired a reputation as an orientalist. This would be the first of numerous works on Persia, Turkey, and the Middle East in general.

Question: When did William Jones learn all of the languages he knows?
early age