If anyone knows about passengers/ship's lists, and similar to Australia, could you please check out in particular post #15 in this thread.
https://www.british-genealogy.com/fo...e-)?highlight=

Reading the whole thread might help in determining a specific year in which John and Agnes travelled. (I apologise in advance for not having time to thoroughly read it myself.)

Please post any replies to that thread.

Thank you.

Pam