Times Cryptic Jumbo 1467

[NeilMunro]

Very grateful for all help with these clues please.
42dn: “One crossing the line in interrupting Peter, say (8).”
44ac: “Familiar with animal’s home, say (8).”
49ac: “Cheaply con one lady out of publicity (8).”
51ac: “Sage European bringing down leader (5).”

[Lie-in King]

42d Finisher - 'in' (in) 'fisher(man)' ([Saint] Peter, say)
44a Material (lawn, say) - 'mate' (familiar) + 'lair' (round; back)
49a Stingily - 'sting (con) i (one) l(ad)y (no publicity)'
51D Rishi - 'Irish' with leader 'I' brought down

[NeilMunro]

Many thanks!!!