Aldgate Pump is an historic water pump in the City of London, at the junction of Aldgate High Street (leading from Aldgate), Fenchurch Street and Leadenhall Street. The pump marks the start of the A13 road to Shoeburyness, and is a Grade II listed structure. As a well, it was mentioned during the reign of King John. As the city developed, it is thought to have been taken down and re-erected in its current location in 1876, as a drinking fountain, as streets were widened. Served by one of London's many underground streams, people began to complain about the "funny" taste of the water. Upon investigation, this was found to be caused by the leaching of calcium from the bones of the dead in many new cemeteries in north London through which the stream ran. In 1876, the New River Company changed the supplies to mains water. The wolf head on the pump is supposed to signify the last wolf shot in the City of London. Fenchurch Street railway station was built in 1841 upon the site of Aldgate Pump Court. Aldgate Pump was also the name of a song, written by G. W. Hunt for the lions comique Arthur Lloyd in 1869. In the song, the raconteur is abandoned by the girl "I met near Aldgate Pump".