Simplify the following text for a Grade 10 native English-speaking person.
Original: Lucius Aurelius Verus ( 15 December 130 â `` 169 ) , born as Lucius Ceionius Commodus , known simply as Lucius Verus , was Roman co-emperor with Marcus Aurelius ( 121 â `` 180 ) , from 161 until his death .
Simplified: Lucius Verus ( Lucius Ceionius Commodus , 15 December 130 â `` 169 ) was Roman co-emperor with Marcus Aurelius ( 121 â `` 180 ) , from 161 until his death .