Elijah Blue Allman (born July 10, 1976), known professionally as P. Exeter Blue, is an American musician, and the son of singer Cher  and her second husband Gregg Allman. He is a half-brother of Chaz Bono, Delilah Allman, Michael Allman, Layla Allman, and Devon Allman.

Through his mother Cher, Elijah is of Armenian, Irish, English, and German ancestry.

On December 1, 2013, he married Marieangela King, an English singer.

Elijah Blue Allman is the singer and guitarist for the rock band Deadsy, which, prior to its hiatus in April 2007, consisted of Alec Püre on drums, Dr. Nner on synthesizer, Carlton Megalodon on Ztar, and Jens Funke on bass. Deadsy released two albums: 2002's Commencement, and Phantasmagore, which came out on August 22, 2006. Many of the themes used by Allman in Deadsy have been heavily influenced by the 1955 film This Island Earth.

He was given his first guitar by Kiss bassist Gene Simmons, and at the age of 13 went on tour as a guitarist with Cher; he appears as a guitarist in the music video for her song "If I Could Turn Back Time". In 1994, he auditioned for the spot of guitarist for Nine Inch Nails, but ended up losing the spot to Robin Finck.

He has worked with Thirty Seconds to Mars for the band's self-titled debut album. Exeter has also provided guest vocals on a number of different songs for other bands including Orgy, Coal Chamber and Sugar Ray.

Personal life

Allman has dated Bijou Phillips,  Heather Graham,  Kate Hudson,and Paris Hilton.  He married Marieangela "Queenie" King, of the band KING and sister of Jazzy and Ruby King from the British pop duo Blonde Electra, on December 1, 2013. 

Discography

with Deadsy

• Demo (1995)
• Deadsy (1996)
• Commencement (1999, unreleased version)
• Commencement (2002)
• Phantasmagore (2006)

with Elijah Blue and the Trapezoids

Since starting Elijah Blue and the Trapezoids, Allman has released a few demos on his Myspace, but no news of an album have surfaced since 2008.

• "Haunted" (4:00)
• "White Knuckle Angel Face" (3:40)
• "Long Way Down" (3:21)

as featured musician

• Orgy – Candyass (1998, additional vocals and keyboards on "Revival")
• with Cher – Crimson & Clover (1999)
• Sugar Ray – 14:59 (1999, additional vocals on "Personal Space Invader")
• Coal Chamber – Chamber Music (1999, additional vocals and keyboards on "Shock the Monkey", additional vocals on "My Mercy")
• Orgy – Vapor Transmission (2000, additional vocals on "The Spectrum")
• "What's Going On" (2001, additional vocals on "What's Going On (Fred Durst's Reality Check Mix)")
• The Family Values Tour 2001 (2001, appears live on the Static-X song "Push It")
• Thirty Seconds to Mars – 30 Seconds to Mars (2002, plays guitar and bass on "Welcome to the Universe")
• Korn – Korn Kovers (2005, additional vocals on "Love My Way")
• Mickey Avalon – Loaded (2012, additional vocals on "Mickey's Girl", recorded in 2009)