David J. Peterson Biography: Wife, Age, Child, Parents, Height, Net Worth, Movies, Instagram, YouTube
David Joshua Peterson, professionally as David J. Peterson, is an American linguist and professional language creator known for constructing Dothraki and High Valyrian for HBO’s “Game of Thrones.”
A UC Berkeley and UC San Diego alumnus, he co-founded the Language Creation Society and has since become one of the entertainment industry’s most sought-after conlangers, contributing to projects including “Dune,” “The Witcher,” and “Doctor Strange.”
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| Wiki Facts & About Data | |
| Real Name: | David Joshua Peterson |
| Stage Name: | David J. Peterson |
| Born: | January 20, 1981 (age 45 years old) |
| Place of Birth: | Long Beach, California, United States |
| Nationality: | American |
| Height: | 1.73 m |
| Parents: | Sandi Ishii, Mr. Peterson |
| Spouse: | Jessie Peterson (m. 2023) |
| Relationship: | Married |
| Children: | 1 |
| Occupation: | Linguist, Language Creator, Author |
| Net Worth: | $1.5 million |
Early Life and Education
David J. Peterson came into the world on January 20, 1981, in Long Beach, California, to mother Sandi Ishii and Mr. Peterson.
Details about any siblings is not publicly known.
He graduated from Pacifica High School before attending the University of California, Berkeley, where he earned dual Bachelor’s degrees in English and Linguistics in 2003.
He later received a Master’s degree in Linguistics from the University of California, San Diego in 2005.
He is of Caucasian and Japanese descent through his maternal side, and his religion is Christianity.
Career
David J. Peterson began creating languages as a hobby in 2000, designing and discarding several systems before finding his professional calling.
In 2007, he co-founded the Language Creation Society, an organization dedicated to the art and study of constructed languages.
His breakthrough arrived in 2009 when HBO contacted the Society seeking someone to develop a full language for an upcoming fantasy series based on George R.R. Martin’s novels.
Peterson won the competitive selection process and was tasked with expanding the few Dothraki phrases from the books into a complete, functional language with its own grammar and vocabulary.
The resulting Dothraki language, which Peterson described as sounding like “Arabic plus Spanish,” became one of the most recognizable invented languages in modern television.
He subsequently created High Valyrian for the same series, further cementing his reputation as the industry’s leading conlanger.
Peterson’s credits expanded rapidly across film and television, including Shiväisith for Marvel’s “Thor: The Dark World,” Trigedasleng for “The 100,” Hen Linge for “The Witcher,” and Chakobsa for Denis Villeneuve’s “Dune”.
Beyond his screen work, Peterson authored “The Art of Language Invention” (2015), a comprehensive guide to constructing languages that drew on his professional experiences and became a key text for aspiring conlangers.
He also created Duolingo’s High Valyrian course, making the language accessible to a broader audience.
In recent years, he has collaborated extensively with his wife, Dr. Jessie Peterson, on projects including “Dune: Part Two” and Pixar’s “Elemental,” while co-hosting the YouTube series “LangTime Studio” where they build new languages live.
Social Media
- Instagram Handle: @athdavrazar
- YouTube Channel: LangTime Studio / The Art of Language Invention
Personal Life
David J. Peterson was previously married to Erin Peterson; the marriage began on June 29, 2008, and ended in divorce.
He has one child from that marriage.
He later married Dr. Jessie Peterson, a fellow linguist and conlanger, in an intimate ceremony at the Wisdom Tree near the Hollywood sign in October 2023.
The couple collaborates professionally on language creation projects and co-hosts “LangTime Studio” on YouTube, where they develop new languages together in real time.
Filmography
- Game of Thrones (2011–2019)
- Thor: The Dark World (2013)
- Defiance (2013–2015)
- Star-Crossed (2014)
- Dominion (2014–2015)
- The 100 (2015–2020)
- Penny Dreadful (2015)
- Doctor Strange (2016)
- The Witcher (2019)
- Motherland: Fort Salem (2020–2022)
- Dune (2021)
- House of the Dragon (2022)
- Elemental (2023)
- Dune: Part Two (2024)
- Superman (2025)
Net Worth
David J. Peterson has an estimated net worth of around $1.5 million, earned primarily through his work as a professional language creator for major film and television productions.
His earnings are linked to his language development for franchises including “Game of Thrones,” “Dune,” and “The Witcher,” along with royalties from his book “The Art of Language Invention,” his Duolingo course.
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