Research shows that like other border families, several hundred years ago, the Kerr's did not wear kilts.  Kilts were Highland dress.  A high proportion of Kerr's lived south of Edinburgh, a great distance from the Highlands. Additionally, the Kerr's were horsemen.  As one could imagine, horseback riding while wearing a kilt would be difficult at best.  Some Kerr's who went to the north of Scotland did wear the kilt. Additional research has shown that the Kerr tartan, is not of ancient vintage but was developed a century and a half ago when most border and lowland families designed theirs in the great tartan revival of the 1820s.

Cutting out well is better than sewing up well.
Scottish Proverb