Jean-Michel Byron (born Jean-Michel Byron DuPlessis) is a South African-born funk and rock vocalist.
 The singer-songwriter is best known for serving for a time as the lead vocalist for the Los Angeles-based progressive rock band Toto for new material on their first greatest hits album, "Past to Present", as well as the band's "Greatest Hits Live...and More" project.
 Byron was the fourth frontman in the band's history, replacing Joseph Williams after Williams had suffered from voice issues due to intense touring, and the South African singer was pushed heavily by the group's record label.
 The line-up change divided Toto's band-members, yet key group member Jeff Porcaro expressed support at first.
 His tenure with the band ended up being both brief and highly controversial with fans.
 In more recent years, Byron has collaborated with the jazz fusion group Michael Sanders & the One Tribe Nation.
Christopher Joseph Williams (born August 26, 1985) is a former American football guard.
 He was drafted by the Chicago Bears 14th overall in the 2008 NFL Draft.
 He played college football at Vanderbilt.
 Williams has also played for the St. Louis Rams and the Buffalo Bills.
William Joseph Williams (November 17, 1759 – November 30, 1823) was an American painter.
 He was born in New York City, the son of William Williams, a painter born in Bristol, and Mary Mare Williams, sister of the painter John Mare.
 Today, Williams is widely regarded as the first American portraitist.
Joseph Stanley Williams (born September 1, 1960) is an American rock singer and film score composer, best known for his work in the rock band Toto, who he fronted from 1986 to 1989, and again from 2010 to the present.
 He is the son of film composer John Williams and actress/singer Barbara Ruick and the grandson of jazz drummer Johnny Williams and actors Melville Ruick and Lurene Tuttle.
Minoru Niihara (二井原 実 , Niihara Minoru ) (born March 12, 1960 in Osaka, Japan) is the original and current lead singer of the Japanese heavy metal band, Loudness.
Jealousy is an EP by Japanese band Loudness.
 It was released in May 1988 only in Japan, a market that the band felt to have neglected in favour of American audiences.
 It would also mark the final recording with the classic line-up, until "Spiritual Canoe" in 2001.
 Singer Minoru Niihara left the band after the end of the domestic tour promoting this release.
 The song "Long Distance Love" would later be reworked for the "On the Prowl" album, with vocals by American singer Mike Vescera.
Tony Spinner (born June 9, 1963 in Cape Girardeau, Missouri) is an American rock and blues singer and guitarist, best known for his collaborations with Toto and Paul Gilbert.
 Spinner, who toured with Toto from 1999 until their temporary hiatus in 2008, was personally selected by David Paich as a backup guitarist and backing vocalist and would perform lead vocals on the song "Stop Loving You," originally performed by former Toto member Joseph Williams.
 When Toto reformed in 2010, Williams rejoined the band.
 As a result, Spinner was not invited to re-join the band for the tour.
On the Prowl is the ninth studio album released by the Japanese heavy metal band Loudness.
 It is also their second and last album with American vocalist Mike Vescera, before his leaving to join Yngwie Malmsteen's band for the album "The Seventh Sign" (1994).
 "On the Prowl" is mainly a compilation of self-covers of songs from early Loudness' albums, containing only three new songs written by the band (♠).
 However, Mike Vescera translated and adapted the lyrics of the old songs written by former vocalist Minoru Niihara, to be sung in English.
Sly was a Japanese heavy metal band formed in 1994 by former members of popular groups of the Japanese metal scene.
 The line-up included singer Minoru Niihara and drummer Munetaka Higuchi (Loudness), guitarist Shinichiro Ishihara (Earthshaker) and bassist Koichi Terasawa (Blizzard).
 Sly disbanded in 1998, with Niihara and Higuchi re-joining Loudness in 2000 and Ishihara taking part in the reformation of his former group Earthshaker in 1999.
Michael Landau (born June 1, 1958) is an American musician, engineer, and record producer.
 He is a prolific session musician and guitarist who has played on a large number of albums since the early 1980s with artists as varied as Boz Scaggs, Minoru Niihara, Joni Mitchell, Seal, Michael Jackson, James Taylor, Helen Watson, Richard Marx, Steve Perry, Pink Floyd, Roger Daltrey, Glenn Frey, and Miles Davis.
 Landau, along with fellow session guitarists Dean Parks, Steve Lukather, Michael Thompson and Dann Huff, played on many of the major label releases recorded in Los Angeles from the 1980s–1990s.
 He has released music with several record labels including Ulftone Music and Tone Center Records, a member of the California-based Shrapnel Label Group.

Question: Who was born earliest, Joseph Williams or Minoru Niihara?
Answer: Minoru Niihara