Latin prosequor

← Latin prō- (affix)

← Latin sequor (affix)

→ Spanish proseguir (borrowed)

→ French poursuivre (inherited)

→ Middle French porsuivre (derived)

→ Old French porsuir (inherited)

→ Italian proseguire (derived)

→ Norman poursuivre (inherited)

→ Portuguese prosseguir (borrowed)