What was the name used sometimes in Victorian times for the tower at north end of the Palace of Westminster in London?

Question

The initial parts of which London building were built as a fortress by the Normans, had additions to become a palace and then was used primarily as a prison?

Answer 1

St Stephen's Tower
It houses the bell and clock known as Big Ben, and was officially called the Clock Tower although journalists in Victorian Times referred to it as St Stephen's Tower. The tower was renamed Elizabeth Tower in honour of the Queen for her Jubilee celebrations in 2012.