Blackpool South
Both of these meanings relate to Blackpool, a town in North-west England. For other places of this name see Blackpool (disambiguation).
Blackpool
Blackpool gets its name from a historic drainage channel (possibly Spen Dyke) that ran over a peat bog, discharging discoloured water into the Irish Sea, which formed a black pool (on the other side of the sea, "Dublin" (Dubh Linn) is derived from the Irish for "black pool"). Another explanation is that the local dialect for stream was "pul" or "poole", hence "Black poole".