Hi Thomas!
Wentworth's signature looks really weird and odd, I haven't seen him signing like that at all. :neutral: Here's in person examples from
AutographWorld.com:
His "W" in your photo doesn't match any authentic examples, and in most (if not always) cases he would make a "WM__", not just "W__".
Dominic's autograph is unclear in the scan, so I'm not 100% sure about his, but seeing as Went's auto is probably forged, I'd say Purcell's autograph is too. :neutral: Here's authentic examples from AutographWorld.com:
I'd say it's forged, both autographs don't match authentic examples.
Good luck,
zanne