If you google "Alaisdair Roberts" you'll find lots of references to Alasdair Roberts where various people have misspelled his name.

The real Alasdair Roberts is a fine songwriter and interpreter of traditional songs and no discerning home should be without a copy of his staggeringly good No Earthly Man album.

Here he is doing Lady and the Blacksmith

His own song Carousing

And finally, Lyke Wake Dirge