Christmas Quiz

[Shazmur]

This is Les Rendell’s quiz in aid of Prostate Cancer UK, closing date 31 January 2020.Thanks for any help.
Just would like some help with clues for
19. Defeated isles (not English!) invite loyalists(6,7)
24. "Don't be dismayed guys!" Addressed to whom? (2,5,9)
46. Extent of Stevens' seasonal greetings (8)
Thank you for any help.

[Captain2]

46 here

https://www.theanswerbank.co.uk/Quizzes-and-Puzzles/Question1684888.html

[scorpiojo]

24 Ye merry gentlemen

[bookbinder]

19 adeste fidelis

[Shazmur]

Thank you for all for your help. I had thought it was an anagram of defeated isles but I couldn't make up anything, not good on Latin. I do like to understand how to get to the answers.

[bookbinder]

AB is the website to visit for answers that are clear, easily explained, and willingly provided!