What does the cryptic crossword clue "Good person, Christmas composer – one walking with pride (8)" mean?

The wordplay uses a charade (building blocks). ST (synonym="good person") + RUTTER (synonym="Sir John") = STRUTTER The answer is STRUTTER.

Good person, Christmas composer – one walking with pride (8)

Guardian Cryptic #29453 | 2 Down | 2024-08-05 flower