My grandmother firs last name (In Spain we use two) was Colina. She was Rosario Colina Fernandez and was born in 1902 in Trujillo, Extremadura (Spain). We do not know of other related family in another parts of Spain. By the way, that was one of the cities from where most of the conquistadores came from! I was very surprise to find some Caballos in Navarra and Santander, pretty much in the North of Spain.