# William McFadden Orr

> Irish mathematician (1866–1934)

**Wikidata**: [Q8015396](https://www.wikidata.org/wiki/Q8015396)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/William_McFadden_Orr)  
**Source**: https://4ort.xyz/entity/william-mcfadden-orr


## References

1. MacTutor History of Mathematics archive
2. [Source](https://www.qub.ac.uk/about/Leadership-and-structure/Registrars-Office/FileStore/Filetoupload,671298,en.pdf)
3. Wikimedia Commons
4. Dictionary of Irish Biography