Complex sentence: Additionally they wished for the names to be "derived from some topographical or historical local circumstance" and for example "instead of (a parkway) being called the Riverdale Road (it should) be called Riverway".
Split into simpler sentences: Additionally they wished for the names to be "derived from some topographical or historical local circumstance". For example, "instead of (a parkway) being called the Riverdale Road (it should) be called Riverway".