Marist Brothers and the Society of Jesus (Jesuits) are two separate religious orders. Under church rules you can not be a member of two different orders (Actually that is a generalization and there are some very specific exceptions-but not for this situation.)
It is possible to leave an order and join another, although the process is difficult and requires approval at the highest levels.
There is no easy way to identify if any Marists eventually left and became Jesuits or vice versa. These records are probably maintained in Rome and would require a scholar's involvement to uncover.
Please note that this is a different situation than when Marists work along side Jesuits in institutions affiliated with other orders. Jesuits and Marists share similar missions and they work sometimes work cooperatively,
Marist Brothers was created in 1817.
Marist Brothers means Little Brothers of Mary
Marist Richmond Brothers was created in 2000.
the marist brothers came to australia in 2000
Marist brothers has written: 'American Catholic hymnal ...'
Marist Brothers College Rosalie was created in 1929.
Marist Brothers International School was created in 1951.
St. Henry's Marist Brothers' College was created in 1929.
Marist Brothers Old Boys RFC was created in 1908.
The motto of Marist Brothers College Rosalie is 'Age quod agis'.
St. Henry's Marist Brothers' College's motto is 'Omnia Vincite'.
Dope