# James Ley, 3rd Earl of Marlborough

> English nobleman, sailor, and mathematician (1618-1665)

**Wikidata**: [Q15438632](https://www.wikidata.org/wiki/Q15438632)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/James_Ley,_3rd_Earl_of_Marlborough)  
**Source**: https://4ort.xyz/entity/james-ley-3rd-earl-of-marlborough


## References

1. Faceted Application of Subject Terminology
2. The Peerage