Complex sentence: The term is thought to have spawned from the character of Jane Eyre in popular Victorian author, Charlotte Brontë's Jane Eyre, who had attended Lowood Institution, enforcing conformity and plainness amongst its students.
Split into simpler sentences: The term is thought to have spawned from the character of Jane Eyre in popular Victorian author, Charlotte Brontë's Jane Eyre. The character of Jane Eyre had attended Lowood Institution, a school that enforced conformity and plainness amongst its students.