Chris,
Your inquiry unfortunately hits me at a bad time, as I am in hot pursuit of info for a relative so I did not double-check the
Hayes website for the indicated databases. The Tithe Applotment records are online solely for Clare on the Clare Library
website, as we family historians are the ones who transcribed it a few years ago. John Hayes has placed on his website
the images of the 1824 Pigot's Directory for all Irish locations, sorted by major towns like Ennis and Limerick. There are no
Anderson listings (that I could see, doing a quick visual scan) in Ennis, and there are two Anderson widows (that is, listings
of "Mrs." only) in the gentry section in Limerick city. Pigot's does not appear to list military men, so you still need to find a source for the RIC. John Hayes has the full Griffiths Valuation of 1848 - 64, searchable with the provided search engine, which returns dozens of Anderson listings around Ireland. Without sufficient names provided of your Thomas's children (other than Elizabeth), I cannot recognize if there are possible cousins (the same names tend to re-appear in a family generation by generation) in the Griffiths Valuation listings for Clare and Limerick (see below). Perhaps you will see something that seems similar.
I suggest that you look over all this data and form a working assumption, to give a focus for your research. You can always
modify the assumption as you find new data. The Scottish government has a great website for ordering documents,
which I encourage you to do for the marriage of Thomas and Euphan. Focusing just on Thomas and Andrew being potentially twins, their birth in a city might be the product of prior planning by their parents, without the parents actually
residing in Ennis. Help of a medical nature is available in a city, within the time needed for birthing. The boys may not have
been baptised there, although in 1821 a baptism likely would have taken place within a day or two, particularly for twins who might have been small and viewed as medically fragile, needing a really quick baptism. You can check with the Church Representative Body (title from memory) office in Dublin as to church records for Ennis and for Limerick of that time period.
The other observation that might prove useful is that, in this time period, the younger sons of gentry tended to join the
army because they were not going to inherit any land. Eleven seems young but the apprenticeship system of the time
normally started boys at almost that age, and the military did take young boys for non-combatant positions, as support
staff to the soldiers. Of course, one of your prime goals is to get confirmation of any dates appearing in military records,
which can be faulty (and placename spellings are terrible, too).
I will keep your people in mind as I continue to review materials, both saved already and those I encounter in the future.
Regards,
Sharon Carberry
http://www.failteromhat.com/pigot.php 1824 directory
http://www.failteromhat.com/griffiths.php
Anderson William Errina Kiltenanlea Clare
Anderson William Town of Ennistimon Newtown Street Kilmanaheen Clare
Anderson William Town of Ennistimon Market Place Kilmanaheen Clare
Anderson John Town of Milltown Malbay Main Street Kilfarboy
Anderson Johanna Garryellen Fedamore Limerick
Anderson John Newpark Croagh Limerick
Anderson John Newpark Croagh Limerick
Anderson Johanna Garryellen Fedamore Limerick
Anderson Johanna Garryellen Fedamore Limerick
Anderson James Briska, More Kilkeedy Limerick
Anderson James Briska, More Kilkeedy Limerick
Anderson James Briska, More Kilkeedy Limerick
Anderson John Newpark Croagh Limerick
Anderson Patrick Carrigbeg Castletown Limerick
Anderson Christopher Coolbaun Castletown Limerick
Anderson Patrick Carrigbeg Castletown Limerick
Anderson Denis Carrigbeg Castletown Limerick
Anderson Denis Carrigbeg Castletown Limerick
Anderson Patrick Carrigbeg Castletown Limerick
Anderson Denis Carrigbeg Castletown Limerick
Anderson Christopher Coolbaun Castletown Limerick
Anderson Christopher Coolbaun Castletown Limerick