Like you I am a bit interested in our background. I have in my possession an Obituary dated 16th September 1916 for a Michael Coghlan.
This Obituary included a bit of background including the fact Michael when two left Cork for Sydney, with his parents in the ship Magistrate.
They then travelled to Melbourne in 1839 on the Schooner Hope and in 1843 travelled to Port Fairy and eventually setteled on the Merri River at Warrnambool
where they live to 101 and 108 years of age the greater age being attained by Mrs Coghlan.
Michael is my Great Grand father, he had nine children including Thomas who is my Grandfather.
I don't know if this of any interest but don't hesitate to contact me for more info.