I am really interested in all these Hiltons.
I have a Hannah Hilton who was born approx 1816 in Brighton, Sussex - obviously not the same Hannah as the one born in 1852, however, she lived in Aldinga in South Australia where the younger Hannah went. Aldinga is also called "White's Valley" or "White's Gully" after Hannah's husband - Samuel White. Samuel White was very successful at setting up farms and a milling business there and even expanded into shipping.
I was really wondering if the reason why the other Hannah wound up in Aldinga was because she had relatives there who just about built the place. Hannah came to Australia with her sister Barbara and her sister's three children. However, there was also a William Hilton on the same ship and that has been suggested may have been another relative. He came from Litlington, Sussex just like Robert! These people are looking suspiciously related. Samuel and Hannah also moved to New Zealand in 1868. So Susannah and George Kidd are following six years later. It would be interesting if they went to Wanganui.
https://www.wikitree.com/wiki/White-63167