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David J. Peterson

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David J. Peterson
Date of Birth
Language consultant
External Links:

David J. Peterson is the president of the Language Creation Society which specializes in the creation of constructed languages, or "conlangs", from scratch. Peterson has worked in this field since 2000.

On 12 April 2010 HBO confirmed that Peterson was fleshing out the Dothraki language into a fully-fledged conlang for use in the series, with a vocabulary of over a thousand words.

Starting in Season 3, Peterson began developing the High Valyrian and Low Valyrian languages.

Peterson also developed the separate alien languages for the Syfy Channel TV series Defiance, which premiered in 2013. Peterson developed two full languages, for the Castithans (Kastithanu) and the Irathients (L'Irathi), as well as basic outline sketches of the Indogene and Liberata languages (Indojisnen and Yanga Kayang, respectively).

In February 2014, Peterson reached an agreement with Viking Penguin to write a book about conlanging, entitled How to Invent a Language. The book will include material on the Dothraki and Valyrian languages. Peterson will continue to work on Game of Thrones, though he estimates that writing the book will use up most of his free time in 2014.[1]

See alsoEdit


  1. "J. Peterson's blog,, Febraruy 3rd, 2014

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