House of Este di San Martino

Cadet branch of the House of Este

• Coat of Arms
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  House of Este di San Martino
  Lords of San Martino in Rio, Campogalliano, Castellarano, San Cassiano and Rodeglia
  Counts of Corteolona

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  House of Este di San Martino
  Counts of Corteolona
  Marquises of San Martino, Lanzo, Borgomanero, Porlezza, Santa Cristina and Dronero
  Princes of San Martino
  Princes of Modena and Reggio
  Grandees of Spain

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  House of Este di San Martino
  Marquises of San Martino, Lanzo, Borgomanero, Porlezza, Santa Cristina and Dronero
  Princes of San Martino
  Princes of Modena and Reggio
  Arms from ca.1570 after marriage of Filippo I d'Este to Maria di Savoia, illegitimate daughter of Emmanuel Philibert, Duke of Savoy

• Personal Arms
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  Sigismondo d'Este
  1st Marquis of San Martino in Rio
  Younger son of Niccolò III d'Este, Marquis of Ferrara
  Progenitor of the branch