Simplify the following text for a Grade 11 native English-speaking person.
Original: While the first post carve-up duke is competingly counted as Bernard III - because of two predecessors of the same name before 1180 - or as Bernard I with his great-great-great-great grandson Bernard II being counted second .
Simplified: While the first post carve-up duke is sometimes called Bernard III - because of two predecessors of the same name before 1180 - or Bernard I with his great-great-great-great grandson Bernard II being counted second .