It's more difficult to help when you don't post all the details that you already have. You mention 13 children but your post only mentions 9, you've said you found 3 marriages but not ones for the other 8, so you seem to have 13 children but haven't posted all of them. Through searching various other forums (more about this later) I have found 11 children that you know about which leaves 2 unaccounted for.
Starting with the 1851 census- according to any online lists I've found Glenmakeeran is not available. So, have you found it listed somewhere or have an extract for it from Old Age Pension application?
http://www.emeraldancestors.com/news/1851_Census_for_County_Antrim/47/It would seem that the McAlisters moved around the area quite a bit but the Valuation Revision Books (which follow on from the printed version of Griffith's Valuation) have recently come online and you can use them to try tracking the family's movements (should be quite useful).
http://www.proni.gov.uk/index/search_the_archives/val12b.htmWhat I've bee able to re-construct so far-
Charles Mcalister (c1817) m.(c1844)
Mary Ann Stewart (c1813-aft.1901)
1. James Mcalister (c1845)
2. Alex. Mcalister (c1846)
3.
John Mcalister (c1849-died 1851/c1855)
4. Catherine Mcalister (c1851)
5. Charles Mcalister (c1851)
6. Margaret Mcalister (c1853)
7. John Mcalister (c1855)
8.
Ezekiel Mcalister (c1857-1900?)
9.
Robert Mcalister (c1859)
10.
Mary Mcalister (c1861-aft.1901)
11. Jane Mcalister (c1863-alive 1881)
Ezekiel Mcalister (c1857-1900?) m.(1882) Mary (Waters) Donoughy. With 1st husband Peter there was a son John Donoughy born 1879- have you tried searching for this son to find more details about mother Mary?
https://familysearch.org/pal:/MM9.1.1/FGJQ-67PThe townland 'Terard' is possible supposed to be Tenaghs.
Robert Mcalister (c1859) went to Scotland- you should be able to trace him & family in Scottish records
Mary Mcalister (c1861-aft.1901) went to U.S.- you should be able to trace her & family in U.S. records
Have you found mother Mary (Stewart) Mcalister's death yet? the place of death and informant on the certificate might give you more details.
Possibly the family buried here without gravestone but there are lots of McAllisters, etc. there-
http://www.discovereverafter.com/graveyards/98/st-patricks-church-culfeightrin-ballyvoy-co-antrimHave you seen query #86 on this page?
http://www.ballycastle.info/genealogy.htm