The info re his communion came from an on-line tree on Ancestry, the reference listed as:
Finland, Communion Books, 1670-1917
There is an actual image of the record on the Ancestry page so it seems legit.
The on-line tree has no information re his arrival in Australia and the only other piece of information that I'm not sure if you have is a mention of (presumably) him in the
New South Wales, Australia, Government Gazettes, 1853-1899
1892 May-June
Listed in a section of the Gazette labeled "Country Letters" p439
218 Cederlune Jno, Culcairn (sic)
I don't know exactly what this entry is - perhaps unclaimed letters??
Some more spelling variations, but still in the same Riverina area (and no help in finding how he got here).. You may already have this which would appear to be the death of his son
1948 #19313
CEDELLAND, August aged 88 (thus b abt 1860)
Mother's family name at birth: WALDRON
Father's name: CEDELLAND John
Born at HOWLONG
Death registered WANGARATTA
Judith