![Melvil Dewey](images/inventors/melvil-dewey.png)
![Richard de Clare](images/royal/richard-de-clare.png)
Family Relationship of
Melvil Dewey
Inventor of the Dewey Decimal System
20th Great-grandson to
Richard de Clare
Magna Carta Surety
★ → Click or tap a name to see more details including source citations.
![Download PDF](images/_global/pdf-download.png)
print chart
Dewey Decimal System
Inventor of the Dewey Decimal System
Magna Carta Surety
★ → Click or tap a name to see more details including source citations.
Dewey Decimal System