It took place in late 80's when Linwood had some legal issues with a boat builder in the North that was using the same name for it's boats first. So he just named them Parker. I had one of the 23 Sou'Westers and it was made in 1983.
I even got Linwood to write a letter to the NC Wildlife Registration division to change the name to a Parker on that boat. It helped it sell a few years later.
There was a period of overlap in the names and logos.
First there was the Sou`wester...
Then there was a period where they were known as a Parker Sou`wester...
I've actually seen several variations of this logo. The other has the Parker logo on top, and a smaller version of the old Sou`wester logo underneath.
Then the logo just became the Parker logo we all know today.