Duke of Tancos

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Duke of Tancos (in Portuguese Duque de Tancos) was an aristocratic Portuguese title, associated with the House of Tancos and Atalaia, created in 1790, by Mary I of Portugal to Constança Manoel.

The family name associated with the Ducal House of Tancos is Manoel.

Its holders were:

  1. Lady Constança Manoel