The 1878–79 Welsh Cup was the second season of the Welsh Cup. The cup was won by Newtown White Star who defeated Wrexham 1–0 in the final.
First round
Source: Welsh Football Data Archive
Replay
Source: Welsh Football Data Archive
Oswestry receive a bye to the next round
Second round
Source: Welsh Football Data Archive
Newtown receive bye into next round
Third round
Source: Welsh Football Data Archive
Replay
The replay was abandoned after half-an-hour, with the White Stars 3–1 up, after the Bangor umpire punched a White Stars player. The WFA ordered a replay but Bangor refused to play.
Wrexham received a bye to the next round.
Semi-final
Source: Welsh Football Data Archive
Replay
Source: Welsh Football Data Archive
Final
References
The History of the Welsh Cup 1877-1993 by Ian Garland (1991) Welsh Football Data Archive