who was queen victoria's predecessor
Queen Victoria's predecessor was her uncle, King William IV who reigned from 26 June 1830 - 20 June 1837.he is the second longest reigning British monarch after Queen Victoria, â¦ who reigned for 64 years.   Note from a pedant   There has not been a Queen (or King) of England for over 300 years. Queen Elizabeth II is Queen of the United Kingdom of Great Britain and Northern Ireland.