Simplify the following text for a Grade 11 native English-speaking person.
Original: Marcel-Fran Ã ois Lefebvre ( November 29 1905 â `` March 25 1991 ) , better known as Archbishop Marcel Lefebvre , was a French Roman Catholic bishop .
Simplified: Marcel FranÃ ois Marie Joseph Lefebvre ( 29 November 1905 â `` 25 March 1991 ) was a French Roman Catholic archbishop .