Crossword Genius

Bred in sin set about showing one's pedigree? (4,8)

Ross

I believe the answer is:

bend sinister

I'm a little stuck... Click here to teach me more about this clue!

'one's pedigree?' is the definition.
Although both the answer and definition are singular nouns, I cannot see how one could define the other.

'bred in sin set about' is the wordplay.
'about' indicates an anagram.
'bred'+'in'+'sin'+'set'='bredinsinset'
'bredinsinset' anagrammed gives 'BEND-SINISTER'.

'showing' acts as a link.

Can you help me to learn more?

(Other definitions for bend sinister that I've seen before include "Heraldic sign of illegitimacy" , "In heraldry, a diagonal line on a shield, top right to bottom left" , "Supposed heraldic sign of bastardy" , "Sign of bastardy on a coat of arms" , "in acknowledgment of father, naturally" .)

I've seen this clue in The Globe and Mail.
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