More probably the name is a mixture of Legionis and Ratæ, Leg-rat ceaster, the camp of the Legion at Ratæ.
The third Legionis Castra remained always Welsh, and so hardened on Cymric lips into Kair Leon or Caerleon.
Henrico Lee legionis equitum præfecto Comitia Americana: The American Congress to Henry Lee, major of cavalry.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "legionis" in a variety of sentences. We hope that you will now be able to make sentences using this word.