The first mestiços descended from Portuguese explorers, soldiers and merchants who reached Sri Lanka after the pioneering voyage of Vasco da Gama.
When the Dutch took over coastal Sri Lanka, the descendants of the mestiços took refuge in the central hills of Kandyan Kingdom under Sinhalese rule.
By the middle of the 18th century, the descendants of the mestiços had partly merged with descendants of the Dutch, giving rise to the a Eurasian community (a mixture of Portuguese, Dutch, Sinhalese and Tamil), known as the Burghers. Some of these people spoke Portuguese, others spoke Dutch. Later, the Burgher community developed into two different communities: the Dutch Burghers and the Portuguese Burghers.
The Portuguese presence in Sri Lanka was extended to non-urban areas, there is a wide Portuguese heritage in Sri Lankan society, culture and administration. Lexicon of Portuguese origin can be found in the Sinhala language (at least 1,000 words), there may be more but insufficient study has been carried out.