 Walpole was born in Auckland , New Zealand , the eldest of three children of the Rev Somerset Walpole and his wife , Mildred Helen , née Barham ( 1854 – 1925 ) . Somerset Walpole had been an assistant to the Bishop of Truro , Edward Benson , from 1877 until 1882 , when he was offered the incumbency of St Mary 's Pro @-@ Cathedral , Auckland ; on Benson 's advice he accepted . 
 Walpole was born in Auckland , New Zealand , the eldest of three children of the Rev Somerset Walpole and his wife , Mildred Helen , née Barham ( 1854 – 1925 ) . Somerset Walpole had been an assistant to the Bishop of Truro , Edward Benson , from 1877 until 1882 , when he was offered the incumbency of St Mary <a href='null_genetive' title='1'><mark>'s</mark></a>Pro @-@ Cathedral , Auckland ; on Benson <a href='null_genetive' title='2'><mark>'s</mark></a>advice he accepted . 
Walpole was born in Auckland , New Zealand , the eldest of three children of da Rev Somerset Walpole and his wife , Mildred Helen , née Barham ( 1854 – 1925 ) . Somerset Walpole had been an assistant to tdaBishop of Truro , Edward Benson , from 1877 till 1882 , when he was offered thdancumbency of St Mary  Pro @-@ Cathedral , Auckland ; on Benson  advice he accepted .