# John Duff Markland

> British Royal Navy officer (1780-1848)

**Wikidata**: [Q76124546](https://www.wikidata.org/wiki/Q76124546)  
**Source**: https://4ort.xyz/entity/john-duff-markland


## References

1. The Peerage
2. Markland, John Duff (NBD)
3. Three Decks