Hi,
I had assumed that Ann (b 1844) was Hannah as Ann was a nickname for Hannah, I had hoped this was the right family for me as I was looking for Hannah Elizabeth, who was born in 1843 with a father called Henry and a mother Hannah. If you are interested I have the death certificates for both Henry and Hannah. Hannah Elizabeth was in New Zealand by 1863, presumably before 1861 as I can't find her in the census. I don't know if any other members of her family went with her.