The following is all I have and is from the Passanger list of the Sir W.F. Williams, the ship that they came on.
Elizabeth born. abt 1846. M. George Pritchford 1868, Richmond Tas
Theodus, born. abt 1847 (this is clearly written/printed on the shipping record)
Catherine, born. abt 1848. M. Benjamin Gittus 1869, Richmond Tas
Jeremiah Francis Xavier Duggan. born 1855 (my ggrandfather)
Mary, b.abt 1856/57 (listed as infant on shipping record)
Note; Elizabeth and Catherine are shown as Could Read on the shipping record which may mean that they had some schooling.
I would certainly appreciate any help that you may be able to offer.