Question: When was the Australian musician and actor born who is best known as a member of the children's band The Wiggles and was original member of it?

Context paragraphs:
Sam Moran: Samuel Alexander Moran (born 4 April 1978) is an Australian entertainer best known for having been a member of the children's band The Wiggles from 2007 to 2011.  He was born in Sydney and raised in Wagga Wagga.  He is the host of the children's television series Play Along With Sam.

The Wiggles: The Wiggles are an Australian children's music group formed in Sydney, New South Wales, in 1991.  The current members of the group are Anthony Field, Lachlan Gillespie, Simon Pryce, and Emma Watkins.  The original members were Field, Phillip Wilcher, Murray Cook, Greg Page, and Jeff Fatt.  Wilcher left the group after their first album.  Page retired in 2006 due to ill health and was replaced by understudy Sam Moran, but returned in 2012, replacing Moran.  At the end of 2012, Page, Cook, and Fatt retired, and were replaced by Gillespie, Pryce, and Watkins.  Cook and Fatt retained their shareholding in the group and all three continued to have input into its creative and production aspects.

John Field (songwriter): John William Michael Field (born 15 May 1962) is an Australian composer-songwriter.  He was a founding mainstay member of a rock band, The Cockroaches (1979–94, 2014-present) on rhythm guitar and sharing lead vocals.  He has written tracks for the children's music group, The Wiggles, including the "Hot Potato".  His brothers, Paul Field (later the Wiggles managing director) and Anthony Field (the Blue Wiggle), were also band mates in the Cockroaches.

You Make Me Feel Like Dancing (album): You Make Me Feel Like Dancing is the 31st album released by the Australian children's music group, The Wiggles.  Its title track features Leo Sayer, who wrote and performed the original song from 1976.  It also features Australian country musician Troy Cassar-Daley.  The CD was released on May 8, 2008 & won the Aria for Best Children's Album.

Anthony Field: Anthony Donald Joseph Field, AM (born 8 May 1963) is an Australian musician and actor.  He is best known as a member of the children's group The Wiggles and the 1980s and 1990s pop band The Cockroaches.  While still a teenager, he helped found The Cockroaches with his brothers, Paul and John.  The Cockroaches recorded two albums and enjoyed moderate success, interrupted by Field's service in Australia's regular army, until they disbanded in the late 1980s.

Kenny Sabir: Kenneth Spencer Sabir (born ca. 1975), who performs as Traksewt, is an Australian musician, computer programmer, record label founder and event organiser.  In 1998 Sabir co-founded an independent record label, Elefant Traks.  In 2001, with his fellow label owners, he was an original member of hip-hop band, The Herd and is their producer.  As of August 2011, The Herd have released five studio albums including "Summerland" (2008) which peaked at No. 7 on the ARIA Albums Chart and "Future Shade" (2011) which reached the top 30.

Greg Page (musician): Gregory John Page, AM (born 16 January 1972) is an Australian singer, musician, and actor.  He is best known as the original lead singer and a founding member of the children's band The Wiggles from 1991 to 2006 and then again from 2012 to 2013.  Page has also recorded several solo albums.

Paul Field (musician): Paul Field (born 3 May 1961) is an Australian musician.  He is best known as one of the founding members of the Sydney pub rock band The Cockroaches and The Field Brothers and as Managing Director for the children's music group The Wiggles.

George Young (rock musician): George Redburn Young (born 6 November 1946) is an Australian musician, songwriter and record producer.  Born in Scotland, he moved to Australia with his family as a teenager, and became a naturalised citizen.  He is best known as a member of the 1960s Australian rock band the Easybeats, and as a co-writer of the international hits "Friday on My Mind" and "Love Is in the Air", the latter recorded by John Paul Young (no relation).  Young was also the producer of some work by the Australian hard rock band AC/DC, formed by his younger brothers Malcolm and Angus Young.

Jeff Fatt: Jeffrey Wayne Fatt AM (born 21 July 1953 in Casino, New South Wales, Australia), is an Australian musician and actor.  He is best known as a member of the children's band The Wiggles and the 1980s and 90s band The Cockroaches.

Supporting paragraphs: The Wiggles Jeff Fatt
Answer: 21 July 1953