Schepps, Die aeltesten Evangelienhandschriften der Universitaetsbibliothek, Wuerzburg, 1887, from which these descriptions are mainly taken.
For the history of Austria during the period, see Franz Kroncs, Handbuch der Geschichte Oesterreichs von der aeltesten Zeit, Vol.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "aeltesten" in a variety of sentences. We hope that you will now be able to make sentences using this word.