Looking for parents of Alexander McIntosh born Moulin or Dunkeld Scot

Alexander McIntosh b. Redgorton Sept 1788, married about 1824, Elizabeth Stewart, b. 1801 Blair Atholl, These individuals appear in the 1841,1851,1861 Scottish Census and the Dunkeld Church records, together they had issue John b. 1825, Peter b 1831, Henry b 1832, Charles b. 1837, Elizabeth b 1840 and Neil b. 1843.Records show them as living in Moulin Parish Perth and Dunkeld Perth.

Alexander's father may have been John McIntosh.
However, there are two John McIntoshs listed for Moulin parish and both have a son named Alexander. I am trying to make a connection to the right John.

One John married Isobel Cameron.
The other Johns wife was not specified.
Both Johns appear to have a son Alex or Alexander
If I knew the names of Alexanders siblings I might be able to clirify the correct person.

The Charles above noted is my g.g.g.garandfather who imigrated from Dunkeld in the 1860-70's and settled into Allens Township Scott County Iowa. His sons then moved to Il. First in Rock Island Il and later Chicago.

Charles b. 1837 was married to Mary Leslie also b. 1837 and had a son named Gordon who in turn had a son Donald Scott who had a son Donald Gordon, who had a son Gordon Donald, my brother.

If you can help with any of these people it would be appreciated. Perhaps I can pin Alexander down by way of one of his brothers.

Kenneth McIntosh
Kentucky