# James Clark

> British programmer

**Wikidata**: [Q92660](https://www.wikidata.org/wiki/Q92660)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/James_Clark_(programmer))  
**Source**: https://4ort.xyz/entity/james-clark

## Summary
James Clark is a British programmer and computer scientist best known for his role in developing XML (Extensible Markup Language), a foundational standard for data encoding. Born in London, he has contributed significantly to software development, including maintaining the Groff typesetting system. His work has shaped modern computing and data interchange.

## Biography
- **Born**: February 23, 1964, London  
- **Nationality**: United Kingdom  
- **Education**: Merton College, Charterhouse School  
- **Known for**: Developing XML and maintaining Groff  
- **Employer(s)**: Not explicitly stated; affiliated with open-source projects like GNU Groff  
- **Field(s)**: Computer science, software engineering  

## Contributions  
James Clark played a pivotal role in creating **XML** (1998), a markup language that revolutionized data encoding and interoperability, becoming a critical standard for web and enterprise systems. He also maintained **Groff** (starting in 1989), a Unix-based typesetting system used for technical documentation. His work on these tools has underpinned software development, publishing, and data exchange. Additionally, Clark has contributed to open-source projects and programming tools, emphasizing practical solutions for technical workflows. His dual focus on structured data (XML) and documentation (Groff) reflects his impact on both software infrastructure and information management.

## FAQs  
### Q: What is James Clark’s most notable achievement?  
A: Clark is best known for developing **XML** (1998), a universal standard for encoding data, and maintaining **Groff**, a Unix typesetting system.  

### Q: Where does James Clark currently reside?  
A: He resides in **Bangkok**, Thailand.  

### Q: What other projects has James Clark contributed to?  
A: Clark has worked on open-source tools and programming projects, including his role as **Groff maintainer** since 1989.  

## Why They Matter  
James Clark’s development of **XML** transformed how data is structured and shared globally, enabling technologies like web services, configuration files, and document formats. His maintenance of **Groff** ensured high-quality technical documentation in Unix environments, impacting software development practices. Without Clark’s contributions, modern data interchange and Unix-derived systems would lack critical foundational tools, affecting industries from publishing to enterprise software. His emphasis on open standards and practical software solutions has influenced generations of developers and engineers.

## Notable For  
- **Creator of XML** (1998), a global standard for data encoding.  
- **Maintainer of Groff** (since 1989), essential for Unix documentation.  
- **Residence in Bangkok**, reflecting his international career.  
- **Member of the Sainsbury family** through his mother, Elizabeth Sainsbury.  

## Body  
### Early Life and Education  
Clark was born on February 23, 1964, in London, to Roger Clark and Elizabeth Sainsbury. He studied at **Charterhouse School** and **Merton College**, though specific degrees are not detailed in the source material.  

### Career  
- **Groff Maintainer**: Clark began maintaining the **Groff** typesetting system in 1989, ensuring its continued relevance for Unix-based technical documentation.  
- **XML Development**: His work on **XML** (first released in 1998) addressed the need for a flexible, human- and machine-readable data format, leading to its adoption by the W3C.  
- **Entrepreneurship**: Listed as an entrepreneur, though specific ventures are not detailed in the provided data.  

### Personal Life  
Clark resides in **Bangkok** and maintains an online presence through platforms like Twitter (@james_clark) and GitHub (jclark). He speaks English and is associated with the Sainsbury family through his maternal lineage.  

### Legacy  
Clark’s technical contributions remain embedded in software infrastructure. XML’s ubiquity in data exchange and Groff’s role in Unix ecosystems underscore his lasting influence on computing practices. His career reflects a commitment to open, interoperable systems that support global collaboration.

## References

1. [Source](http://www.jclark.com/bio.htm)
2. The Peerage
3. [Source](https://www.gnu.org/software/groff/manual/html_node/History.html)
4. Freebase Data Dumps. 2013