I have found quite a bit on Trove over the last few months.
Alice Lithgow is my great grandmother. She is the one that has lead me along this path.Alice formed a huge brick wall for me over the past years. It wasn't until I found she married Charles Massey that lead started popping up. The Massey name was mentioned in my Mum's home (I was adopted out to another family all beit from Johnson to Johnson and therefore stayed in the Johnson family - my dad died just before i was born and mum couldn't cope with 3 children. My sister recalls the Massey name being mentioned quite a few times. They were involved in theatre with Williamson's as was most of my early family - google Alice Massey (Higginbotham)dau of Alice Lithgow (Higginbotham then married Massey) died in 1900).
Now, you have provided the Cobbin contact which throws more light on things. I think Cobbin is a witness on one of thecertificates I have.Interesting stuff.