Robert Hall Weir ( ; born October 16, 1947) is an American singer-songwriter and guitarist, best known as a founding member of the Grateful Dead.
 After the Grateful Dead disbanded in 1995, Weir performed with The Other Ones, later known as The Dead, together with other former members of the Grateful Dead.
 Weir also founded and played in several other bands during and after his career with the Grateful Dead, including Kingfish, the Bob Weir Band, Bobby and the Midnites, Scaring the Children, RatDog and Furthur, co-led by former Grateful Dead bassist Phil Lesh.
 In 2015, Weir, along with former Grateful Dead members Mickey Hart and Bill Kreutzmann, joined with Grammy-winning singer/guitarist John Mayer to form the band Dead & Company.
 Weir continued to tour with Dead & Company in 2016 and 2017.
James Martin Pacelli McGuinness (Irish: "Séamus Máirtín Pacelli Mag Aonghusa" ; 23 May 1950 – 21 March 2017) was an Irish republican and Sinn Féin politician who was the deputy First Minister of Northern Ireland from May 2007 to January 2017.
The Plumber is a 1979 Australian psychological thriller film about a psychotic plumber who befriends a woman.
 Written and directed by Peter Weir, "The Plumber" was originally made and broadcast as a television film in Australia in 1979 but was subsequently released to theaters in several countries beginning with the United States in 1981.
 The film was made shortly after Weir's critically acclaimed "Picnic at Hanging Rock" became one of the first Australian films to appeal to an international audience.
 The film stars Judy Morris, Ivar Kants, and Robert Coleby, all of them being most notable as actors in Australian soap operas.
Winners of the BAFTA Award for Best Direction presented by the British Academy of Film and Television Arts.
 John Schlesinger, Roman Polanski, Woody Allen, Alan Parker, Louis Malle, Joel Coen, Peter Weir and Ang Lee tie for the most wins in this category, with two each.
 Martin Scorsese holds the record for most nominations, with nine.
The Way Back is a 2010 American survival drama film directed by Peter Weir, from a screenplay by Weir and Keith Clarke.
 The film is inspired by "The Long Walk" (1956), the memoir by former Polish prisoner of war Sławomir Rawicz, who claimed to have escaped from a Soviet Gulag and walked 4,000 miles to freedom in World War II.
 The film stars Jim Sturgess, Colin Farrell, Ed Harris, and Saoirse Ronan, with Alexandru Potocean, Sebastian Urzendowsky, Gustaf Skarsgård, Dragoş Bucur and Mark Strong.
Caitríona Ruane (born 1962) is a Sinn Féin politician.
 She was a member of the Northern Ireland Assembly for South Down from 2003 to 2017, and served as the Principal Deputy Speaker of the Northern Ireland Assembly from 2016 to 2017.
The Year of Living Dangerously is a 1982 Australian romantic, drama film directed by Peter Weir and co-written by Weir and David Williamson adapted from Christopher Koch's 1978 novel "The Year of Living Dangerously".
 The story is about a love affair set in Indonesia during the overthrow of President Sukarno.
 It follows a group of foreign correspondents in Jakarta on the eve of an attempted coup by the 30 September Movement in 1965.
Peter Weir MLA (born 21 November 1968) is a Northern Ireland Democratic Unionist Party politician.
 On 25 May 2016, Weir became the first non-Sinn Féin legislator (following Martin McGuinness, Caitríona Ruane, and John O'Dowd) to head the province's Department of Education since the department came into existence on 2 December 1999.
Whitehouse Primary School is a primary school in Newtownabbey.
 It was destroyed in an arson attack on 18 July 2009.
 After the school was destroyed, its students were temporarily housed in nearby Newtownabby High School.
 On 14 May 2010, Education Minister Caitríona Ruane approved an amount of £3.6m for rebuilding the school.
Viggo Peter Mortensen Jr. ( ; ] ; born October 20, 1958) is a Danish-American actor, author, musician, photographer, poet and painter.
 He made his film debut in Peter Weir's 1985 thriller "Witness", and appeared in many notable films of subsequent years, including "The Indian Runner" (1991), "Carlito's Way" (1993), "Crimson Tide" (1995), "Daylight" (1996), "The Portrait of a Lady" (1996), "G.I. Jane" (1997), "A Perfect Murder" (1998), "A Walk on the Moon" (1999), and "28 Days" (2000).

Question: When was the person other than Caitríona Ruane and John O'Dowd who was followed by Peter Weir born?
Answer: 23 May 1950