Ok, so the 1871 birth location of Maria is not Vartage by Varteg.  That ties into the location of  a Maria Pugh in 1841 at Vartig Hill, Trevethan:
Rowld Pugh  40  Miner NBIC
Catherine Pugh  35  NBIC
John Pugh  15  Miner  NBIC
David Pugh  14  Miner BIC
Moses Pugh  12  Miner  BIC
Thomas Pugh  10  BIC
Rowland Pugh  7  BIC
Maria Pugh  9  BIC
William Pugh  5  BIC
Morgan Pugh  2  BIC