Hello Southern
I see three entries, in the Victoria BMDs surname BROWN, parents Charles and Barbara.
B 1860 Charles BROWN, LAMP Reg no 15706 mother's surname SPEEDIE
D 1860 Charlotte BROWN age 1 ALE Reg no 3036 - mother's surname listed as SPEEDY
D 1862 Unnamed female BROWN age 2W REDB Reg no 7253E, no surname given for mother and father listed as "Charles Seme BROWN"
Can't see any BROWN births in NSW registered with parents Charles and Barbara, but perhaps, given that there is an entry in the Wesleyan register they were not formally registered.
Another long shot - were they actually married? There is a marriage of a Barbara SPEEDIE to Richard HILL 1864 Victoria reg 3456 which was after the births and deaths of the chn mentioned above.
The immigration entry for Barbara SPEEDIE, age 23 from Newberry Fife, arriving on the Anna into Sydney Feb 21 1855, states that her parents are Matthew? (hard to read) and Isabella, mother dead, father living at Melbourne, Victoria. Barbara is a housemaid, can read and write, state of health good and paid 1 pound fare as an assisted immigrant.
Some possibilities:
Vic indexes has the death of a Mathew SPEEDIE b Fife age 58 in 1863 Reg no 6085;
and death for Ellen SPEEDIE b Fife age 71, parents George SKINNER and Juliet REEKIE, 1876 Reg 13277
Leave you to ponder on that!
Judith