A family/clan tartan according to The Register of Scottish Tartans. However, it is one of the most used tartans for a lot of things, including off the peg kilts, ladies' kilted skirts, furniture decoration etc.
The kilt is a 2.6 yard light weight wool casual made by O'Neil of Dublin. This one is sold off the peg by Schottenladen in romantic Rothenburg ob der Tauber in Bavaria, Germany. It has more pleats than most 4-5 yard kilts but are rather narrow. The quality is good. O'Neil of Dublin kilts are also to buy from a retailer in Berlin, Irish Shop.