The following surnames ...
Dick, Dickle, Hardy/Hardie, Henry, Hixson, Ingles (form of Inglis?), Kidston, Kirk, McKillrick, Norton ...
are listed as Douglas septs in various places on the internet. However, without some historical evidence, these are unproven claims and these surnames ~should not~ be included. It would be wonderful to have the evidence presented for possible inclusion of one or more of these surnames in the Douglas sept list.

Perhaps a member or a guest will be able to provide such evidence.

Update...

I would still like to find documentation for SIMMS and SYME. These two names are part of the sept list for Clan Douglas Association of Australia (CDAA) and I have been told by a CDAA officer that these names were part of a list given by our CDSNA officers to the newly chartered CDAA back in the late 1980s.

One website in Canada lists NORTON as a sept. This is another name for which I would really like to find documentation.

If you can provide the evidence for any of these names, please post here. We need your help.

I found proof for the inclusion of Simms and Syme in an early Dubh Ghlase newsletter. Both names were accepted as septs at the same time as Symington, both being considered variants of Symington.

Needing information on KIDSTON and its connection to the Douglas family. Some websites list Kidston as a sept but finding documentation is difficult.

The first step in determining whether or not a surname is connected to Clan Douglas is to find historical evidence. While family tradition can be a useful starting place, it is difficult to document beyond refutation. "Welsh", like "Wallace", likely denotes someone from Wales.