1452 - Italian painter, sculptor and inventor Leonardo da Vinci was born.
1755 - Samuel Johnson’s ‘A Dictionary of the English Language’ was published in London. It had taken eight years to compile.
1852 - Screw top bottles were patented in Paris.
1865 - President Abraham Lincoln died after being shot the previous evening by actor John Wilkes Booth.
1891 - American inventor Thomas Edison gave a public demonstration of his kinetoscope, a moving picture machine.
1901 - A motorised hearse was used at a funeral for the first time.
1912 - The British passenger liner RMS Titanic sank in the North Atlantic at 2.20am, two hours and forty minutes after hitting an iceberg. Only 710 of 2,227 passengers and crew on board survived.
1923 - Insulin was discovered by Canadian physiologists Frederick Banting and J J R Macleod.
1923 - The first public showing of a talking picture took place, in New York.
1928 - The flying doctor service started in Australia.
1929 - J M Barrie donated the copyright fee for ‘Peter Pan’ to Great Ormond Street Children’s Hospital.
1936 - Aer Lingus (Aer Loingeas) was founded by the Irish government as the national airline.
1941 - In the Belfast Blitz, 200 bombers of the German Luftwaffe attacked Belfast, killing 1,000 people.
1942 - The George Cross was awarded to the Island of Malta, for bravery under enemy attack during World War II.
1945 - British troops liberated the German concentration camp of Bergen-Belsen.
1970 - The first handheld electronic calculator was unveiled in Japan.
1984 - Comedian and magician Tommy Cooper collapsed and died on stage, aged 61
1989 - More than 90 football fans were crushed to death at Hillsborough Stadium in Sheffield during the FA Cup semi-final between Nottingham Forest and Liverpool.
2014 - More than 200 female students were declared missing after a mass kidnapping in Borno State, Nigeria.