Today we're talking about the founder of our modern day Plunket Society, Frederick Truby King, who's generally referred to as Truby King.
His career didn't start with paediatric health, but followed a career in what in modern terms would be called psychiatry, back then known less kindly as lunacy.
To talk about his life and legacy, we're joined by Otago university professor Barbara Brookes who specialises in medical history.
Listen to Barbara Brookes interview with Jesse Mulligan
Dr Truby King Photo: NZ History.govt.nz