I saw your request for information about descendants who lived at Auchenweet in Tarbolton.
I am not a descendant but I do have letters written by the daughter of Mary Allan, one of the children of Andrew and Jean Allan who owned the farm at the beginning of the 19th century. The person who wrote the letters is the first wife of my g-g-grandfather.
One of the sons, Mathew, ran the farm after Andrew died.
I went to see the farm recently. At least I presume it was that one - there are two farms called Auchenweet. The people in the village thought it would be the one north of the village. In one of the census it say it was 216 acres.
Do you know the names of your ancestors who lived on that farm?