# William IX, Marquess of Montferrat

> Marquess of Montferrat

**Wikidata**: [Q1272767](https://www.wikidata.org/wiki/Q1272767)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/William_IX,_Marquis_of_Montferrat)  
**Source**: https://4ort.xyz/entity/william-ix-marquess-of-montferrat


## References

1. Integrated Authority File
2. Freebase Data Dumps. 2013
3. Sejm-Wielki.pl