Barons di San Cosimo 1364, Barons di Ghariexem e Tabia 1372 and 1398, Baron 1373, Baron di Buqana and Djar il-Bniet 1376.
Granted to: Milite Enrico de Oso.
Title: Barony di San Cosimo.
By: Frederico III, King of Sicily and Malta
On: 1364 in Messina.
With Remainder to: His descendants by feudal tenure (Jure Francorum) in perpetuity.
List of Title holders:
1. Milite Enrico de Oso, 1st Barone, reverted back to the crown 1369, reverted back 1375.
2. Milite Jaime de Oso, 2nd Barone, (c. 1400), succeeded by his son.
3. Milite Ferdinando de Oso, 3rd Barone, (d. 1427), succeeded by his daughter.
4. Cristina de Oso de Bocchio, 4th Baroness, (c. 1460), succeeded by her son.
5. Corrardo de Bocchio, 5th Barone, ( c. 1490), succeeded by his son.
6. Enrico de Bocchio, 6th Barone, (d.1540), succeeded by his daughter.
7. Elvira de Bocchio Psinga, 7th Baroness, sold in 1541 to the Knights of St John of Malta.
Granted to: Milite Enrico de Oso.
Title: Barony di Ghariexem e Tabia.
By: Frederico III, King of Sicily and Malta
On: 1372 and 1398 in Messina.
With Remainder to: His descendants by feudal tenure (Jure Francorum) in perpetuity.
List of Title holders:
1. Milite Enrico de Oso, 1st Barone, reverted back to the crown 1372 reverted back under a new creation 1375.
2. Milite Jaime de Oso, 2nd Barone, reverted back to the crown 1415.
Granted to: Milite Enrico de Oso.
Title: Barone de Oso (life only).
By: Frederico III, King of Sicily and Malta and later Queen Mary and King Martin I.
On: 1372 and 1398 in Messina.
With Remainder to: lifetime.
List of Title holders:
1. Milite Enrico de Oso, 1st Barone, extinct.
Granted to: Milite Enrico de Oso.
Title: Barony di Djar il-Bniet e Buqana.
By: Frederico III, King of Sicily and Malta
On: 1376 in Messina.
With Remainder to: His descendants by feudal tenure (Jure Francorum) in perpetuity.
List of Title holders:
1. Milite Enrico de Oso, 1st Barone, reverted back to the crown 1376.
Articles relating to this title: