Thanks Annie,
Just double checking a couple of things, I'm prone to typo's - especially with a 2 year old running around :-)
Yes date of first marriage should be 1820, and I copied the census info from an old email sent to me, your additional info here has me wondering if I have the right family as my direct ancestor David Wilson Patison was born 19 Nov 1840 (as per family search) but he is not present on the 1841 census and neither is his older sister Helen / Ellen.
I have just checked David's death cert. it notes the following:
Died 18 March 1912, Farmer, Male 70 yrs (which makes birth year c 1842), Cause of death was Cerebral Haemorrhage / Coma 2 1/2 years, Father Mitchell Patison, Lawyer, Helen Patison formerly Wilson, born Edinburgh Scotland and 58 years .Victoria (making immigration c 1584), Married Euphemia McGillivray at Port Campbell VIC 30 years.
David and Euphemias Marriage cert states (23rd of October 1873):
David Wilson Patison, Bachelor of Edinburgh, Edinburghshire, Farmer, aged 31 (also makes birth year c 1842), living Cororrock, son of Mitchell Patison Barrister and Helen Wilson to Euphemia McGillivray, Spinster, born Melbourne, living with parents at Peterborough, Daughter of Archibald McGillivray, Farmer and Jessie McDonald.
All other info I have for Mitchell comes from other shared trees, hmm, I'm stuck.
Thank you also for posting the gravestone pictures, no luck yet, but I'll take a closer look soon.