Early life and family. Barker was born in 1973 in Takapuna, New Zealand.Barker’s father is the well-known New Zealander Ray Barker of the Barkers Clothing retail chain. Dean Barker was educated at Westlake Boys High School.Barker married former New Zealand field hockey representative Mandy Smith in February 2004. They have four children, three daughters; Mia, Olivia & Isla and one son Matteo.