my first Kenswil was born in 1808. The same mother had 4 children between 1808 and 1813 with the name Kenswil. This was a free, light colored woman. One of the first names of the Wilkens clan was Unico. Because this is such a typical first name, one can trace a connection to the original Wilkens family probably through occurance of the connection Unico and Kenswil.
To correct an earlier contribution: Kenswil was not a name given to freed slaves at manumission, but a name given by one of the Wilkens men to their illegetimate children by already free colored women.