I found the following on Patiño.:
This ancient surname originated from the Duero and Miño rivers in Galicia, Spain. It is mentioned in a couplet written by Flores de Ocáriz:
I saw an unbreachable castle bounded by the Duero and Miño; useless it is to describe it, for it's the land of Patiño.
The castle described above may have originally been called Patiñorbe, a name later shortened to Patiño. The Iberian branches of the family are limited mostly to Galicia, Andalucía and Portugal. However, some settled in Milan, Italy, and became ancestors to the Marquises of Castelar and the Counts of Belveder and Grandes of Spain.
Although not numerous in Latin Ameria and the United States, Patiños can be found in California and New Mexico. José Victor Patiño, of Mexican parents, died in 1789 at the Santa Bárbara presidio.
Diego Vela Patiño was born in Seville in 1650. At age 22, he emigrated to Peru and later married María Josefa Martínez. About 1654, the birth of Apolonia Patiño, daughter of Anotonio, is recorded in Hispaniola (now the Dominican Republic).
Also in Hispaniola, José Patiño and Teresa Mejía, natives of La Vega, has a son, Hilario, in 1779. By 1795, Manual Patiño of La Coruña, Spain, had a daughter named María de la Luz. Five years later, his second wife, María Sevilla, gave birth to Juana de Mata.
Simón Patiño, a Bolivian industrial engineer born in 1868, amassed a personal fortune worth $900 million from copper and silver mines in his country.
Source: Instituto Genealógico e Histórico Latinoamericano.
This comes from the site: http://www.hispaniconline.com/res&res/names/p.html