Tls 1114

[dafyddapgwilym]

Good grief: this one has not been fun...
Two left -
4d) Old book with incapable one for priest (9) i?c?n?b?e
and
14ac) Yes, for some of a group of juveniles (4) y?o?

[Neveracrossword]

14 Yoof? A group of juveniles. Yo/yesOf, in clue.

[dafyddapgwilym]

Thank you: that was/is my best guess, too, but it's a bit of a duff clue...

[Mamyalynne]

Incunable - Old book

Un replaces Ap in 'incapable'

[aelmpvw]

4d incunable

[Mamyalynne]

Old book with incapable one for a priest - ap = a priest

[Neveracrossword]

Glad my Yoof - ugly word! - matched your thoughts.

[dafyddapgwilym]

Aha! At least I've learned a new word this morning. And the rain seems to have paused. I must go and get a life. Thank you so much for helping. :)