I want to know the answer to the following question:
Which cant is often used by Irish Travellers?
All the background I'm provided with is that "The Insular Celtic languages of the Goidelic sub-group (Irish, Manx and Scottish Gaelic) and the Brittonic sub-group (Cornish, Welsh and Breton, spoken in north-western France) are the only remaining Celtic languages—the last of their continental relations becoming extinct before the 7th century.". Is that enough to answer the question?
Answer: no