Regarding the meaning of 'Lichtbob' may i suggest a possible origin. every line infantry regiment had a 'light' company of Skirmishers. In the Napoleonic wars, during the peninsular campaign, the idea came up to form 'Light' regiments of Skirmishers including two 'Rifle' regiments claad in green and armed with the Baker rifle. In about 1808, the 'Light division' was created by Major General Sir Robert Crawfurd. Known coloquially as 'Black Bob' I wonder if 'Lightbobs' (In Scots Lichtbob) was a now long defunct nickname for the light Division'created by Black Bob? Might i also suggest that the 'Lichtbobs Lassie variant of that song may have been popular during the period of the Napoleonic war?