Complex sentence: At the time of the prince visit, Francis Fleming, then acting governor, announced a new road extended from the Bowring Praya would be renamed to Des Voeux Road and the new praya would be named as Connaught Road.
Split into simpler sentences: At the time of the prince's visit, Francis Fleming, then acting governor, announced a new road extension beginning from the old Bowring Praya. It was to be renamed Des Voeux Road and the new praya would be named Connaught Road.