Please don't call them gypsies..
There have been several great migrations, or diaspora, in Romani history. The first was the initial dispersal from India about a thousand years ago. Some scholars suggest there may have been several migrations from India. The second great migration, known as the Aresajipe, was from southwest Asia into Europe in the 14th century. The third migration was from Europe to the Americas in the 19th and early 20th centuries after the abolition of Romani slavery in Europe in 1856-1864. Some scholars contend there is a great migration occurring today since the fall of the Iron Curtain in Eastern Europe.
See A Brief History of the Roma