I've had another serendipitous Wikipedia discovery: the entry on Kings Cliffe, Northamptonshire.
As the entry says, this village is "variously King's Cliffe, King's Cliff, Kings Cliff, Kingscliffe".
I don't have my gazetteer to hand, but both Google Maps and the AA Route Planner opt for Kings Cliffe. I wonder whether the other spellings remain in much use.
The village used to have a railway station; Wikipedia refers to this as both Kingscliffe and King's Cliffe station.
9 hours ago