Don Pedro de Moctezuma Tlacahuepantli

From the English Wikipedia page on Pedro Moctezuma:

Don Pedro (de) Moctezuma Tlacahuepan Ihualicahuaca was a son of the Aztec emperor Moctezuma II and María Miyahuaxochtzin (Miahuaxochtzin), the daughter of Ixtlilcuecahuacatzin (Ixltlilcuechahuac), ruler of Tollan (and older half-brother of Moctezuma II).

The Counts and later Dukes of Moctezuma de Tultengo are descended from Moctezuma II through Pedro Tlacahuepan and son Diego Luis Moctezuma (Ihuitl Temoc), who went to Spain. Diego Luis' son, Pedro's grandson, Pedro Tesifón de Moctezuma y de la Cueva was created "Count of Moctezuma" by Philip IV of Spain in 1627.

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On October 15, 1539, he received from Emperor Charles V. a Coat of Arms, in recognition of his status as the son of Moctezuma.