 Hittite is the best attested member of the Anatolian branch of the Indo-European language family, and the Indo-European language for which the earliest surviving written attestation exists, with isolated Hittite loanwords and numerous personal names appearing in an Old Assyrian context from as early as the 20th century BC.The language of the Hattusa tablets was eventually deciphered by a Czech linguist, Bedřich Hrozný (1879–1952), who, on 24 November 1915, announced his results in a lecture at the Near Eastern Society of Berlin.His book about the discovery was printed in Leipzig in 1917, under the title "The Language of the Hittites; Its Structure and Its Membership in the Indo-European Linguistic Family".