# Mark Summerfield
**Wikidata**: [Q120585224](https://www.wikidata.org/wiki/Q120585224)  
**Source**: https://4ort.xyz/entity/mark-summerfield

## Summary
Mark Summerfield is a programmer and software engineer from the United States. He is identified in library and academic records as a practitioner of software engineering and a developer of computer software.

## Biography
- **Nationality:** United States
- **Occupation:** Programmer, Software Engineer
- **Gender:** Male
- **Languages:** English (spoken, written, and signed)
- **Field(s):** Software Development, Software Engineering

## Contributions
Based on the provided structured data, Mark Summerfield is classified as a programmer and software engineer. In this capacity, he is described as a person who writes computer software and acts as a practitioner of software engineering. His professional identity is established through multiple international authority control systems, including the Library of Congress and the National Library of France, which categorize his work under the domain of software development.

## FAQs

### Q: What is Mark Summerfield's nationality?
A: Mark Summerfield is a citizen of the United States.

### Q: What is Mark Summerfield's profession?
A: He is a programmer and software engineer.

### Q: In what language does Mark Summerfield write?
A: According to bibliographic records, his writing language is English.

## Why They Matter
Mark Summerfield represents a professional in the field of software engineering and programming. His inclusion in numerous high-profile international authority databases—such as VIAF (Virtual International Authority File), the Library of Congress, and the National Library of Korea—indicates a recognized level of contribution to the field of software development. His work involves the creation and engineering of computer software, a critical component of modern technological infrastructure.

## Notable For
- Being classified as a **programmer** and **software engineer**.
- Holding **United States citizenship**.
- Maintaining a presence in global library science records, including the **Library of Congress** (ID: no2004036861) and **VIAF** (ID: 76622872).
- Writing and communicating professionally in **English**.

## Body

### Professional Classification
Mark Summerfield is identified through structured knowledge graphs as a **programmer** and a **software engineer**.
*   **Programmer:** Defined in the source material as a "person who writes computer software" and a subclass of "software developer."
*   **Software Engineer:** Defined as a "practitioner of software engineering."

### Identity and Demographics
*   **Citizenship:** United States.
*   **Gender:** Male.
*   **Given Name:** Mark.
*   **Family Name:** Summerfield.
*   **Instance of:** Human.

### Authority Control and Identifiers
Mark Summerfield is indexed in numerous international databases, confirming his identity as a distinct entity in software and publishing records.

**Library and Archival IDs:**
*   **ISNI:** 0000000115757135
*   **VIAF ID:** 76622872
*   **Library of Congress Authority ID:** no2004036861
*   **GND ID (Germany):** 132421844
*   **BIBSYS ID (Norway):** 4045954
*   **National Library of Korea ID:** KAC200902441
*   **National Library of Brazil ID:** 000521473
*   **Bibliothèque Nationale de France ID:** 155163633
*   **Open Library ID:** OL2653752A

**Additional Catalog References:**
*   **IdRef ID:** 07788468X
*   **NUKAT ID (Poland):** n2004251287
*   **NDL Authority ID (Japan):** 01005937
*   **Canadiana Name Authority ID:** ncf12121409

## References

1. Czech National Authority Database
2. Virtual International Authority File
3. CiNii Research
4. [Mark Summerfield | Open Library](https://openlibrary.org/authors/OL2653752A/Mark_Summerfield)
5. National Library of Israel Names and Subjects Authority File