Fixtures 13 September 12 | 19.00 | Cowbridge 'A' | - | Merthyr 'A' | 2 - 3 | | | | Details | 20 September 12 | 19.15 | Merthyr 'A' | - | Barry Leisure 'A' | 4 - 1 | | | | Details | 27 September 12 | 19.15 | Merthyr 'A' | - | Llanishen 'A' | 4 - 1 | | | | Details | 2 October 12 | 19.15 | Cardiff Vet's | - | Merthyr 'A' | 3 - 2 | | | | Details | 18 October 12 | 19.15 | Merthyr 'A' | - | Old Penarthians 'A' | 3 - 2 | | | | Details | 24 October 12 | 19.20 | Rhiwbina 'C' | - | Merthyr 'A' | 4 - 1 | | | | Details | 1 November 12 | 19.15 | Merthyr 'A' | - | Cowbridge 'A' | 4 - 1 | | | | Details | 8 November 12 | 18.45 | Barry Leisure 'A' | - | Merthyr 'A' | 1 - 4 | | | | Details | 15 November 12 | 18.45 | Llanishen 'A' | - | Merthyr 'A' | 1 - 4 | | | | Details | 22 November 12 | 19.15 | Merthyr 'A' | - | Cardiff Vet's | 5 - 0 | | | | Details | 6 December 12 | 19.00 | Old Penarthians 'A' | - | Merthyr 'A' | 2 - 3 | | | | Details | 13 December 12 | 19.15 | Merthyr 'A' | - | Rhiwbina 'C' | 3 - 2 | | | | Details | | | | - | | | | | |
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