The UK's great emancipator is a fellow named Wilburforce
Why do you feel the need to just make stuff up?
It was in 1542, not 1492, that Spain enacted a law abolishing colonial slavery, but was forced to weaken these laws by 1545. In 1811 Spain finally abolished slavery at home and in all colonies except Cuba,[15] Puerto Rico, and Santo Domingo-
http://en.wikipedia.org/wiki/Abolition_of_slavery_timeline
Slavery was not abolished in those colonies until 1866-
http://wiki.answers.com/Q/When_did_Spain_abolish_slavery