I alighted on the posting http://leavesfortrees.blogspot.co.uk/2012/07/wordless-wednesday-vintage-genealogy.html?showComment=1342626585119 thanks to a Geneabloggers listing which caught my interest.
I have always be interested in samplers, but there was an additional reason why this lovely piece of stitching was so special - for it was "wrought by Susan Weston aged 12 years" - and Susan Weston was my maiden name.
The early 19th century sampler is in the care of Wisconsin Historical Society. My Weston family come from the English Midlands and I have no knowledge of any American connections. But it was still a fascinating coincidence to come across.