I have found that my grandfather John Seton Hay was son of Peter Seton Hay born in 1852 in Scotland and emigrating to New Zealand in 1860. John Seton Hay was born in Wadestown in1889. He married Jessie May Patricia Ludlow , who had been married to a John Henry ?/s who was killed in an accident with a wool truck. They had a daughter Daphne who was about 7 years older than my father Seton Geoffrey Hay, who was born in St Kilda in 1923.
My father told me his father was Austalasian Sales manager for the Vacuum Oil Company prior to WW2. in New Zealand
My dad spent most of his childhood in Sandgate Qld (sixth Avenue)
I cannot fill in the gaps about John Seton Hay and his marriage to Jessie May Ludlow