S v C - [1981] 2 NZLR 371

Infants and children — Surname of child — Parents divorced — Surname of child registered on birth certificate was that of father — Parents separated when child one year old — Child in mother's physical custody — Mother resumed use of maiden name and, without father's consent or knowledge, began to use her surname for child — Father regularly exercised rights of access — Whether child (now five years old) should be known by father's surname.