"Getherers o' blaw" were tinkers and travellers who carried a leather pouch which was used to carry "blaw" a mixture of oatmeal and animal fat.."Dripping". This mixture was begged or "cadged" door to door.

I got this from sleeve notes on an old Jimmy Mcbeath EP many years ago.

I also remember braxy sheep.
Braxy caused the sheeps stomach to swell and sometimes burst.
Some said it was a bacterial infection, others that a rapid change of feeding affected the animals.
The mutton from a "Braxy" sheep was perfectly edible, and many small farmers survived on it....Ake