I know that I was told, so no docs., that Elizabeth I wore the ermine robe
at her coronation to represent purity. Purity of what I can't remember but
possibly because the ermine is said that it will protect it's purity at all
cost and purity is = to virtue, that the ermine implies that Elizabeth I is
virtuous and intends to protect England's virtue at all cost. Also virtue =
to moral excellance and righteousness.
Henry VIII had ermine for his robe.
I have found only one portrait of Henry VII with ermine and it is post
death. It is from the painting with his wife and Henry VIII.
Maybe this will help towards a direction for your research.
I want to thank everyone for their answers. But what I was really looking
for is the significance of the ermine trimming on coronation robes; how and
why that particular bit of costuming originated...
Again, thank you all very much!