Probably not needed but just to eliminate the other KELL family.
Marriage Qld.
1883/B8638
KELL Robert Allan
BURWOOD Emily
Births
1884/B33163 Kell Lillian Emma Robert Allan Emily Burwood
1887/B38718 Kell William Allan Robert Allan Eaily Burwood
1893/B52044 Kell Alfred Edward Robert Allan Emily Burwood
1895/B56128 Kell Bertram Thomas Robert Allan Emily Burwood
If Robert was working on a coastal trader then he was obviously home during some of that time.

To eliminate the other KELL family on the WA electoral roll.
The KELL family in WA that included a widow Emily [husband Joseph] are in the Victorian Indexes having children at Richmond in the 1860's.
Marriage 1864
KELL Joseph
SHARP Emily Reg Number 1091.
They had 10 children.
Joseph died in 1901 and Emily in 1925 and they are both buried in the same grave at Karrakatta.
K.