Hi all,
With the confirmation that I was on the track of the correct Angus Middleton, I've been on a Middleton "hunt"

over morning coffee. Here are the meager results:
I see that there is a submission on the IGI for the birth of Angus Middleton and his many siblings in Irvine, Ayr. Searching for Middleton in Irvine gave me the family in 1841, although when searching for Angus himself that record doesn't come up. Hmmm. Some problem with Ancestry's search function.
Here they are in 1841:
East Back Road, Irvine, Ayrshire
John Middleton, 53, born Ayrshire, Muslin H L W
Jean Middleton, 45, born Ayrshire
Elizabeth Middleton, 25, born Ayrshire, Muslin Sewer
George Middleton, 23, born Ayrshire, Muslin H L W
Alexander Middleton, 17, born Ayrshire, Ap Taylor
Margaret Middleton, 14, born Ayrshire, Muslin Sewer
Angus Middleton, 11, born Ayrshire
John Middleton, 7, born Ayrshire
Jean Middleton, 5, born Ayrshire
Matthew Middleton, 3 , born Ayrshire
By 1851 Jean is alone, presumably a widow:
Townhead St, Irvine, Ayrshire
Jean Middleton, 56, Head, born Irvine, Ayrshire
Elizabeth Middleton, 34, Daughter, born Irvine, Ayrshire, Muslin Sewer
George Middleton, 32, Son, born Irvine, Ayrshire, Hand Loom Weaver (muslin)
John Middleton, 18, Son, born Irvine, Ayrshire, Apprentice Pemter
Jean Middleton, 16, Daughter, born Irvine, Ayrshire, Muslin Sewer
Matthew Middleton, 11, Son, born Irvine, Ayrshire, Scholar
Margaret Middleton, 22, is a house servant in the Rolle household. The head is J B Rolle, a "Gentleman Officiating As Minister To A Genall Congregation Of Baptists At Kilwinning"
In 1861, a search for Middleton born in Irvine comes up with only:
1) Alexander, who is now a tailor in Glasgow
2) Matthew, a 58 yr old house painter (could he be an uncle?)
3) A 7 yr old John in Dalry, who is the nephew of William and Margaret Gibson. Looks like another illegitimate child of one of Margaret's brothers?
Where did they all go? From my vantage point (I'm sitting here in Minnesota, looking 360 degrees around me to all of the states and Canada

) I can't see any of them. So, the obvious conclusion is that some of our members Down Under should be able to catch a glimpse

Anyone want to give it a try?
All the best,
Sarah