1974 (age 38–39)
Ballsbridge, Dublin, Ireland
|Education||University College Dublin
University College Galway
|Notable credit(s)||TV3 News
The Morning Show with Sybil & Martin
|Spouse(s)||John Prendeville (2004-present)|
Early life 
Born in Ballsbridge, Dublin, Mulcahy was educated locally before being conferred with a Bachelor of Arts from University College Dublin. She subsequently attended University College Galway where she studied communications. She has also completed a marketing diploma.
Personal life 
Mulcahy gave birth to her third child Michael on 06 April2012 in Holles Street,she will return to Tv3 in late October 2012
- "The Morning Show". TV3. Retrieved 27 December 2011.
- "TV3 aims for morning magic with new chat show couple". Irish Independent. 9 April 2009. Retrieved 27 December 2011.
- "Wedding Memories". Wedding Journal. Retrieved 27 December 2011.
- "Third baby will be my last, insists TV3's Sybil". Evening Herald. 28 October 2011. Retrieved 27 December 2011.