claim: Moscovium was discovered in 115.
evidence: Mawgan and Meugan -LRB- also Meigant -RRB- -LRB- Latin  : Mauganus -RRB- are names referring to either one or two Brythonic saints who flourished in the 5th or 6th century .. Both names are widely attested in place-names and church dedications , `` Mawgan '' in Cornwall and Brittany and `` Meugan '' in Wales , but it is uncertain whether the names refer to one and the same person .. The parishes of St Mawgan and Mawgan-in-Meneage in Cornwall derive their names from St Mauganus .. St Mawgan. St Mawgan. Mawgan-in-Meneage. Mawgan-in-Meneage. There is also a St Machan in West Lothian -LRB- Scotland -RRB- , as shown by the place-name Ecclesmachan , but again this may be a distinct figure .. St Machan. St Machan. West Lothian. West Lothian. Ecclesmachan. Ecclesmachan. No hagiographical Life survives for Mawgan or Meugan , but figures bearing Latinised versions of either of these names appear in the Lives of St Cadog and St David .. Cadog. Cadog. David. Saint David. A saint called Maucan or Moucan features in an episode of the late 11th-century Life of Cadog , in which he arbitrates a quarrel between Cadog and Maelgwn , king of Gwynedd .. Cadog. Cadog. A Life of St David , also of the late 11th century , refers to a monastery of Mawgan -LRB- Maucannus -RRB- .. David. Saint David. The `` Mostyn Manuscript No. 88 '' , in the National Library of Wales , records several `` Meugan '' festivals , including Manchan of Mohill .. Mostyn Manuscript No. 88. National Library of Wales General Manuscript Collection#Mostyn Manuscripts .28NLW MSS 3020-76.29. National Library of Wales. National Library of Wales. Manchan of Mohill. Manchan of Mohill. Later still , Meugan is mentioned in the Welsh genealogical collection known as Bonedd y Saint , which detail the lineages of Welsh saints .. Bonedd y Saint. Bonedd y Saint. The relevant section has been dated to c. 1510 .