5 facts about Queen Victoria?

1) Queen Victoria's surname was Guelph before she married

2) Before her 18th birthday her full name was Alexandrina Victoria, Princess of Kent.

3) her father died when she was 8 months old.

4) She was born on the 24th may 1918.

5) She was only 18 when she came to the throne.

Clearly point 4) is wrong, since she came to the throne in 1837. Are we sure about point 1)?

No Queen Victoria became Queen in 1819 look on every website and point 1 is wrong