The 1911 Census shows an Arthur James Martin, Farrier, born St Austell, Cornwall married to a Berrie (transcription error, shd be Bessie) Martin, born 1873 Looe Cornwall with son Sydney Arthur Oxenham Martin, born 1896 Salcombe.
The 1901 Census shows an Arthur J Martin, Blacksmith, born 1870 St Austell, Cornwall married to a Bessie Martin, born 1873 Love (transcription error, shd be Looe), Cornwall with son Sydney A O Martin born 1896 Salcombe, Devonshire.
Pre marriage on the Census I have a Bessie Oxenham born 1872, East Looe on the 1891 Census and born 1872, Looe on the 1881 Census. She is at home with parents Jonathan and Thirza (1891 transcription) or Thurza (1881 Transcription).
I am researching the Oxenham name with emphasis on the Welsh connection but the roots are in the West Country. If I can help further let me know