Holders

• 1 João Diogo de Barros Leitão de Carvalhosa, 1st viscount of Santarém * 1757
• 2 Manuel Francisco de Barros e Sousa da Mesquita de Macedo Leitão e Carvalhosa, 2nd viscount of Santarém * 1791
• 3 Manuel Francisco de Barros e Saldanha da Gama Da Mesquita de Macedo Leitão e Carvalhosa, 3rd viscount of Santarém * 1878
• 4 João Diogo de Barros Leitão e Carvalhosa, 4th viscount of Santarém * 1929

Sources

• Nobreza de Portugal e Brasil - 3 vols-vol. 3-pg. 301-305

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