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Wren was a motorcycle produced in 1924. It was advertised by the Jennen Engineering Co of High Holborn, London.
The information on this make is a little confusing. The machine was the Clement ultra-lightweight under a different name.
After the announcement of the Wren, the Clement company took immediate offence and concentrated their efforts on marketing the product under its existing name - nothing further was then heard of Wren.