Romani people
Most Romani speak one of several dialects of the Romani language, an Indo-Aryan language, with roots in Sanskrit. They also often speak the languages of the countries they live in. Typically, they also incorporate loanwords and calques into Romani from the languages of those countries and especially words for terms that the Romani language does not have. Most of the "Ciganos" of Portugal, the Gitanos of Spain, the Romanichal of the UK, and Scandinavian Travellers have lost their knowledge of pure Romani, and respectively speak the mixed languages Caló, Angloromany, and Scandoromani. Most of the speaker communities in these regions consist of later immigrants from eastern or central Europe.
Eastern Romance languages
According to the generally accepted theory regarding their origin, the Eastern Romance languages, are considered to be a evolution of the Vulgar-Latin, spoken in the Balkan area during the domination of the Roman Empire. The Vulgar-Latin, in its turn, is considered to be a mixture of the ancient, local languages: Illyrian, Thracian, Dacian, and the official Latin (the language of Rome). It formed for centuries a language continuum, spread across the Balkans.
After the arrival of Slavic people in the region ( V-VII cent.), many of the indigenous people were assimilated while others were obliged to move and disperse, losing in that way the homogeneity and the previous contacts between them. As a result, the formation of the four languages, that nowadays constitute the Eastern branch of the Romance Languages family, took place.