Almost full grid, name of old charater, area & definition of DISTORTION, just strugling with a few central clues (single misprint in all definitions):
22a Comb native author? Peri's first of course (5) PLI??
20a Single-spoked sponge is strangely half contaminated (6)
16a Day of religous fasting was affectd by rain (6)
11d Celebrated agent's set up with time for fun off course (7) D??????
14d Dover on two wheels from Spain? Trick's the northern new road (8)
Help with these (hints) would be appreciated