I have a copy of a book written by John Stuart Ainslie, 1996.There is a page on the Ainslie tartan.This book is available to be copied by anyone who is related to the Ainslie family.However, it is quite large.
I will share with you what this book says about the Ainslie tartan:
The Ainslie tartan has come about due to the efforts of my friend C.M. (Barney) Ainslie of Cumnor, Oxford, England.In 1992, he had the Scottish Tartan Society produce about eight different designs to his specifications and then had three Ainslie ladies from different branches of the family choose their favorite.One of the ladies, Gladys Ainslie from the Lasswade branch, was over one hundred years old.They all chose the same pattern.The following year the tartan was registered for all Ainslies, whatever the spelling.
It is four colours; black, white, red/brown, and blue.The Black and White is the Shepherds tartan, sometimes called the Border check of the Northumberland tartan.This is the oldest tartan known.Being made of black wool and white wool, it needs no dye.The red should be the same colour as red sandstone.Both the town of Jedburgh and Jedburgh Abbey are built of the local red sandstone. The town arms, (it's a Royal Bourough), are on a red field, the only Scottish town to have that colour.The ruins of the ancient Ainslie stronghold of Dolphinston lie but a few miles south-east of Jedburgh.The blue represents the many rivers that flow through the borders.
In his letter of February 28, 1996, from which the foregoing description of the tartan is extractred, Barney suggested that the blue perhaps "represents the Bonney Blue shy that has been seen over the borders on rare occasions!"Within the packet he enclosed "half of all the existing tartan", the very first that had been woven.
The Ainslie tartan has been accredited by the Scottish Tartan Society and is now in the register of all publicly known tartans.