Have NO idea if these connect to you, or even to each other, but I'm throwing them out there.
The Mormon site has a Jacob Whetter b 1693 Ladock, Cornwall, ENgland (submitted on patron sheet)
A Jacob Whetter is on the 1757 tax list of Mastic Township, Lancaster Co., PA
A Jacob Whitter is in Halifax county. VA c 1764 -- I'm trying to locate his land.At present it looks like he might have gotten it from a LEE.
A Jacob Whitter is in Fredericksburg, VA on 1788/89 tax lists, seems to be a prosperous man.
There are a few others listed in the Colonies/States, but my connection and the reason I am looking at this name is that my ggggrandfather had a brother named Jacob in Pittsylvania Co., VA.Their father was William, Jr, son of William Sr, who had land not too far from Jacob Whitter in Halifax Co, VA c. 1760.
If anybody turns up anything that connects or looks like it might, I would sure appreciate hearing about it.