A Golden Jubilee is a celebration held to mark a 50th anniversary.

King Bhumibol Adulyadej, Thailand's longest-reigning monarch, celebrated his Golden Jubilee on 9 June 1996.

In the United Kingdom and other Commonwealth Realms, a Golden Jubilee celebration is held in the 50th year of a monarch's reign.

Queen Elizabeth II celebrated her Golden Jubilee in 2002, having acceded to the throne in 1952.

In 1887 the United Kingdom and the British Empire celebrated Queen Victoria's Golden Jubilee. Victoria marked 20 June 1887—the fiftieth anniversary of her accession—with a banquet, to which fifty European kings and princes were invited. Although she could not have been aware of it, there was a plan by Irish Republicans to blow up Westminster Abbey while the Queen attended a service of thanksgiving. This assassination attempt, when it was discovered, became known as the Jubilee Plot. At the time, Victoria was an extremely popular monarch: the next day, she participated in a procession that, in the words of Mark Twain, "stretched to the limit of sight in both directions".

Elizabeth II (Elizabeth Alexandra Mary; born 21 April 1926) is the constitutional monarch of 16 sovereign states known as the Commonwealth realms, and head of the 54-member Commonwealth of Nations. She is also head of state of the Crown Dependencies.

Elizabeth was born in London, and educated privately at home. Her father acceded to the throne as George VI in 1936 on the abdication of his brother Edward VIII. She began to undertake public duties during the Second World War, in which she served in the Auxiliary Territorial Service. On the death of her father in 1952, she became Head of the Commonwealth and queen regnant of seven independent Commonwealth countries: the United Kingdom, Canada, Australia, New Zealand, South Africa, Pakistan, and Ceylon. Her coronation service in 1953 was the first to be televised. Between 1956 and 1992, the number of her realms varied as territories gained independence and some realms became republics. Today, in addition to the first four aforementioned countries, Elizabeth is Queen of Jamaica, Barbados, the Bahamas, Grenada, Papua New Guinea, the Solomon Islands, Tuvalu, Saint Lucia, Saint Vincent and the Grenadines, Belize, Antigua and Barbuda, and Saint Kitts and Nevis.

Sean Dunphy (30 November 1937 – 17 May 2011) was an Irish singer who represented Ireland at the 1967 Eurovision Song Contest, achieving second place with "If I Could Choose". He was also the first Irish singer to record in Nashville.

Born in Whitehall, Dublin, Dunphy first became famous in his home country as lead singer with The Hoedowners, a showband led by trumpeter Earl Gill. Between 1966 and 1973, fourteen singles by Sean Dunphy and The Hoedowners entered the Irish Charts including, in 1969, two number ones: "Lonely Woods of Upton" and "When The Fields Were White With Daisies". In the late 1970s, Dunphy went on to have two further hits as a solo artist.

Despite undergoing a quadruple heart bypass operation in 2007, Sean Dunphy continued to give live performances. In March 2009 he sang many of his greatest hits in a one-off concert at Dublin's National Concert Hall. His last public engagement was at a charity event twenty-four hours before his death.

Sean Dunphy and his wife Lily had four children. His son Brian is a member of the Irish band, The High Kings.

John Michael "Ozzy" Osbourne (born 3 December 1948) is an English heavy metal vocalist and songwriter, whose musical career has spanned over 40 years. Osbourne rose to prominence as lead singer of the pioneering English band Black Sabbath, whose dark and hard sound helped spawn the heavy metal genre. Due to Sabbath's dark style, Osbourne became known as the "Prince of Darkness". Osbourne is also known as the "Godfather of Heavy Metal".

In the early 2000s, Osbourne's career expanded when he became a star in his own reality show The Osbournes, alongside wife/manager Sharon and two of their three children, Kelly and Jack. A documentary about his life and career, God Bless Ozzy Osbourne, premiered in April 2011 at the Tribeca Film Festival and was released on DVD in November 2011. Osbourne has achieved multi-platinum status as a solo artist and with Black Sabbath and has sold over 100 million albums worldwide.

John Michael "Ozzy" Osbourne was born in Aston, Birmingham, England, on 3 December 1948. His father Jack worked shifts as a toolmaker at GEC. His mother Lillian worked for the car components firm Lucas. John was the fourth of six children. Ozzy had two brothers (Paul and Tony) and three sisters (Jean, Iris and Gillian); they lived in a small two bedroom home at 14 Lodge Road in Aston. The nickname "Ozzy" was first used when he was in primary school. Although called "John" by his first wife Thelma, Osbourne states that it has been a long time since he's recognised himself when called by his formal name.

Philip David Charles "Phil" Collins, LVO (born 30 January 1951) is an English singer-songwriter, drummer, pianist and actor best known as a drummer and vocalist for British progressive rock group Genesis and as a solo artist.

Collins sang the lead vocals on several chart hits in the United Kingdom and the United States between 1975 and 2010, either as a solo artist or with Genesis. His singles, sometimes dealing with lost love, ranged from the drum-heavy "In the Air Tonight", dance pop of "Sussudio", piano-driven "Against All Odds", to the political statements of "Another Day in Paradise".

Collins's professional music career began as a drummer, originally in a band called The Real Thing with Andrea Bertorelli, who later became his first wife. Collins played drums and shared lead vocals (with Brian Chatton) in Flaming Youth which recorded one album, (Ark II). In 1970, he took over drums for Genesis, which had already recorded two albums. In Genesis, Collins originally supplied backing vocals for front man Peter Gabriel, singing lead on only two songs: "For Absent Friends" from 1971's Nursery Cryme album and "More Fool Me" from Selling England by the Pound, which was released in 1973. Following Gabriel's departure in 1975, Collins became the group's lead singer.