Martín de Argüelles  Martín de Argüelles, Jr. (1566-1630) was the first white child known to have been born in what is now the United States. His birthplace of St. Augustine, Florida ("San Agustín, La Florida") is the oldest continuously occupied, European-founded city in the United States. Argüelles was born in 1566 in the Spanish settlement of San Agustín, Spanish Florida. Martín's parents were Martín de Argüelles (Sr.) and Leonor Morales. His father, Martín Argüelles Sr., an Asturian "hidalgo", was one of the expeditioners who came to New Spain in the New World with Captain General Pedro Menéndez de Avilés in 1565. Argüelles Sr. was the first "Alcalde" (Mayor) of San Agustín, and had been in charge of munitions in the Florida forts of Santa María, San Agustín (now St. Augustine), and Santa Elena. Martín Argüelles Jr. served the Spanish crown in Portugal and several garrisons and expeditions which embarked in the Spanish Armada which went in search of corsair Francis Drake. He was later transferred in 1594 from Havana, Cuba, to Mérida, Mexico, where he was appointed Executive Officer of the Mérida fortress and coast. Argüelles was married in Mérida. Argüelles' descendants included José Argüelles, who was one of the colonizers of the Province of New Santander in New Spain in 1749, in what is now the Mexican state of Tamaulipas. "Relación de La Florida" (1785); edición de Juan José Nieto Callén y José María Sánchez Molledo.