Cryptic 2482

[Glanrhos]

15d - As heard about indirectly, a second indicator? (5-4)
t?i???a?d
23a - Swindled young lady, one of the Irish county set (7)
??n????

Thanks for some assistance

[ripvanwinkle]

15d third hand
23a donegal

[baitress]

15d - third hand.
23a - done gal.

[Glanrhos]

Thanks ripvanwinkle and baitress, I was convinced that 15d was third hand but cound not get "con" for swindled out of my head. I should have thought of Done and gal