The Victorians were so called because they lived in the reign of Queen Victoria. (from 1837 to 1901, if my memory serves well)
very rarley
The Edwardian age followed the Victorian age.
Because it was when Queen Victoria reigned. (e.g. 'the Georgian time' was when King George reigned.)
After Queen Victoria, the most memorable queen of the Victorian age Google her if you want to find out more about her