tartan of the Royal Glasgow Volunteers

[figheadair]

Here's the 1st Lanarkshire Rifle Volunteers.

Elcho Grey/Hodden Grey uniforms. The facings are said to be blue, though they appear black here.

No tartan except for the pipers evidently.

And according to Grierson, "Brass bands were abolished in the battalion in 1883, and a band of thirty pipers, besides
drummers, formed, the pipers wearing green doublets, Sutherland kilt, Boyal Stuart shoulder - plaid, and plain glengarries with blackcock's tail.

Clearly, Henderson is not wearing either Sutherland or Royal Stewart tartan, nor a green doublet and so, the picture does not seem to show the 1st LRV. However, the 2nd Volunteer Battalion, Scottish Rifles did wear Douglas, so he possibly served with them.