Hi Leisa
I am also researching the Campbell's from the Isle of Luing.
My great, great, great grandfather was Duncan Campbell born about 1799 at the Isle of Luing. He married Janet Brodie. Their son Duncan appears to have been married twice. With his second marriage to Charlotte, Colin was born in 1869. Colin and Duncan sailed to Australia in 1890 on board the "OROYA". Duncan, aged 63, then leaves on the "SALIER" in March 1894. Colin stays, marries in Victoria, then settles in Perth. He is my great grandfather and is buried in Perth.
Duncan's first marriage was to Isabelle (1861 census) with children Isabelle, Duncan, Robena and David.
Hopefully we have common ancestors
Regards
Michelle