New Zealand Bensemanns are mostly descended from two brothers; Cordt Heinrich who arrived in Nelson, New Zealand in 1843 on the sailing ship the St Pauli and his elder brother Johann Dietrich who emigrated to Nelson 13 years later on the Inchinnis.

Cordt and his wife Anna Margaretha Elizabeth (nee Kothrade) arrived at Nelson with three children. Johann Albert was 6 on arrival, while his older sister Anna Catherine Marie (who later married the Rev J W C Heine) was 8 and younger brother Johann Heinrich (John Henry) was 3.

Anna and Cordt lost a daughter in Germany just before emigrating and a son born in New Zealand, Johann Heinrich William, died at just only 16. However most of their children had many descendants, including others born in New Zealand; Sophia Magdalena, George Frederick William, Christopher Frederick Carl Heinrich, Anna Margaret Doris and Johann Diedrich.