Hi, I live not far from Cologne and at the moment I am tracing my wife's ancestry. in her lineage there are also Wesslings from Wesel, a town in a district to both sides of the Rhine somewhay further down and not too far from Cologne. I wonder if this town-Name has also a connection to the Name of Wessling.
the ancestors I have found wrote their names as Weßling, Wehsling or Wessling as the "hs" stands for a long "ss" and was later replaced by the "ß".
I lost traces with Hermann Wessling, father of Theodor Wehsling, who must have lived in Bislich, not far from Wesel and was married to Katharina Tinnefeld in 1840. That is all I know so far. If anybody around has information in that matter please e-mail me.