here is my answer robert christian senior came to nz on the dilharree and that left plymouth 13/12/1873 arived nz 11/3/1874 the passenger llist of what i have states that his age was 26yrs and he was from the isle of man he was a labourer so the date of birth could be around 1850??? every thing that i have here states he was from the isle of man hopeing you can help regards bob in nz