Juan Bautista de San Vitores was present at the 1540 muster as a very well-equipped horseman in Vázquez de Coronado's company. Juan was present in New Spain at least by 1536 as a merchant and possibly as slave trader. There were San Vitoreses in Burgos, so perhaps he was a native of that province. Because his documentary record goes cold after the muster and yet he seemed to be a person of some substance, it may be that he died in Tierra Nueva.
1530-1540:
Boyd-Bowman, Indice geobiográfico, II:2375 = Millares Carlo y Montecón, Indice y extractos, II:1978 [fols. 146v – 148r: October 10, 1536, Poder granted by Gabriel de Valmaseda, mercader, to Jerónimo de León for collection of debts from 55 individuals, including de la Morilla, García de Llerena, Diego del Castillo, Batista de San Vitores, Cristóbal Pérez (de casa del factor), Luis Ramírez de Vargas, Juan Pérez de Vergara, Juan de Salamanca, Diego López (sastre), and Juan Jaramillo];
AGI, Contratación, 707, N.1 [June 14, 1537, información hecha a pedimento de Juan Bautista de San Vitores sobre la venta de un negro] [two black slaves from Cabo Verde who had belonged to San Vítores have died of an illness] [San Vitores, in México, had a partnership with Juan de Alfaro and Martín de Mellavia] [he is evidently a merchant, as are the witnesses he calls] [Pablo de Melgosa reviews his accounts]; [San Vitores is a municipio in Medio Cudeyo: Santander];
Millares Carlo y Montecón, Indice y extractos, II:2281 [fols. 561r y v: April 20, 1537, Acknowledgement of a 1200-peso debt by Alonso Carreño to Juan de Alfaro, Martín de Mallavia y Juan Bautista de San Vitores for purchase of merchandise];
Millares Carlo y Montecón, Indice y extractos, II:2350 [fols. 483r y v: July 5, 1537, Contract between Juan de Cuevas, estante en México, and Juan Bautista de San Vitores, merchant, estante in México, for one-year lease of property in Mexico City owned by Cuevas];
Instituto Hispano-Cubano, “Archivo de Protocolos de Sevilla” [II:63: #226, Oficio XV (Cazalla), Libro I, fol. 763: 15 de marzo, 1538] [Juan Bautista de San Vitores, estante en Nueva España, owes money to Esteban de Aquiarca];
Instituto Hispano-Cubano, “Archivo de Protocolos de Sevilla” [II:68-69: #258, Oficio XV (Cazalla), Libro I [fol. 939: 29 de marzo 1538] [Juan Bautista de San Vitores and Antonio de Villegas, estantes en Nueva España, owe money to Juan de Alfaro];
Instituto Hispano-Cubano, “Archivo de Protocolos de Sevilla” [II:68: #258, Oficio XV (Cazalla), Libro I, Juan Bautista de San Vitores is estante en Nueva España, March 29, 1538];
AGI, Justicia, 276, N.2 [witness in México in August 1539 is a Juan Bautista de San Vitores, preso in the cárcel de México, more than 25 years old, can sign his name (signed)] [associated with a Felipe Alonso] [gave wine and other things to the alcaide]
1540-1550:
1540, Feb.: Muster in Flint & Flint, Documents, Document 12 [four horses, chainmail vest, sallet, beaver, elk hide jacket, native arms, Vázquez de Coronado's company]
Other info: Pereda López, emigracion burgalesa [p.301: says Bautista San Vitores];
?RAH, 9/303 [fol. 72r: Tabla genealógica…familia de Sanvítores, marqueses de la Rambla; also D-30, fol. 3v; and D-34, fol. 184v [first and last appear to be the same]; see also F-5, fols. 112v bis: (our man does not appear in this table) the people who are appear to be from Burgos or that region, including don Alonso de San Vítores, señor de la casa de la Portilla…en montañas de Burgos; not dated];
?RAH, 9/305 [familia de Sanvítores, fol. 3v: a very short table beginning with don Hernando Sanvítores de la Portilla, alcalde mayor de Burgos, married to doña Francisca Alonso de Mavienda?; their son don Joseph is I conde de Cabra and marqués de la Rambla, also associated with Burgos in 1621]