The more recently popularised English forms of Snowdon and Snowdonia are thought to derive from the Saxon 'snow dune' meaning snow hill.
There is a precedent for the ditching of English place names for popular tourist attractions, however, with Ayres Rock in Australia now formally known by its Aboriginal name of Uluru.
Previous efforts have been made to drop the English forms including one from language pressure group Cymuned in 2003, who claimed that the area only became known as Snowdonia due to Victorian day-trippers.
Speaking to the Local Democracy Reporting Service after the decision, Mr Roberts said: “I’m naturally disappointed as I felt this was a real chance to make a statement on the need to protect our indigenous Welsh place names.