I have posted below a brief chronological summary of your Hugh McQuisten family, so that hopefully you can see where you have gone off track.
I recommend that you do not follow other public trees on Ancestry, as they are all wrong, because they have all copied the other. None have done the most basic checking of simple facts or have bothered to look at birth or marriage records. Consequently they all incorporated several McQuiston families into one!Scottish records are available from ScotlandsPeople
https://www.scotlandspeople.gov.ukHugh McQUISTENBorn 15 Mar 1860 Maybole, Ayrshire
Parents Matthew McQUISTEN and Jane GALT [marriage 6 June 1856 Kirkoswald]
1861 census MayboleHugh McQuestan age 1
With parents Matthew (27, ploughman ) and Jean (26) and siblings William and Matthew.
1871 census MayboleHugh McQuiston age 11
With parents Matthew (37), Jane (34), and Matthew (14)
1881 census TarboltonHugh McQueston (18) working as a farm servant for the Morrison family.
Hugh McQUESTEN married Mary KELLY 1886 Ballantrae Ayrshire.
- Daughter, Stewart McQUESTIN born 1887 West Calder, died as a baby in 1887.
- Son, William McQUESTIN born 1888 West Calder.
1891 census Hartwood Row, West Calder, MidlothianHugh McQuestin (31, ploughman), Mary McQuestin (wife, 30), William (son, 2)
- Daughter,
Mary Ann Kelly McQUESTIN born 1893 Barrhead and Levern
1901 census Springhill Road, Auchinleck Farm, Neilston, RenfrewshireHugh McQuestion (41 ploughman), Mary (40 wife), William (13 son), Maryann (7 daughter), William Oglivy (51 boarder, joiner)
1910 Son, William McQUISTON married Jane BRATTEN in Inch.
**1911 census Hugh and Mary McQuiston (51 & 50) are in Kilmaurs Ayrshire
1913 daughter, Mary Ann McQUISTON Emigrated to Canada, and in 1914 married William Bratten.
1921 census Hugh and Mary McQuiston (61 and 60) are in Hurlford, Ayrshire.
1925 Mid Calder - Death for Mary McQUISTON (nee Kelly)
1947 Mauchline – Probable Death for Hugh McQUISTON (age 87)
** Children of William McQuiston and Jane Bratten: Hugh McQuiston 1910-1984, Kathie Jane Stewart McQuiston 1913-1914, Jane Bratten McQuiston 1916-2004.