Ev 1672 Theme Help Please

[quinol]

so I'm pretty sure clues with an extra word are all down clues 5, 17, 19, 23

I wondered if the 5th was 15 or 25

not sure how these help so clues or hints to the character very welcome

[ProfessorMaisie]

5th is 25d.

'Bear' is a big hint - the initial letters of the extra words give its author (the first is an initial).

[quinol]

many thanks profmaisie, I'll keep this under my hat

[ProfessorMaisie]

(could be sticky}