Jock Tamson's Bairns

"Jock Tamson's bairns" is a Scots (and Northumbrian English) dialect version of "Jack (John) Thomson's children" but both Jock and Tamson in this context take on the connotation of Everyman. The Dictionary of the Scots Language gives the following definitions:
The phrase is used in common speech in Scotland and it also occurs in general culture. Some examples are: the play of that name by Liz Lochhead;
a folk music group of that name;
The folk group [http://www.folkmusic.net/htmfiles/inart620.htm... plus