Falmouth Town's Senior Cup semi-final against Saltash United will be held at St Austell on Wednesday, March 8.
The other semi-final between Bodmin Town and Newquay will be on Tuesday, March 7 at a venue yet to be confirmed.
In the semi final of the Cornwall Charity Cup, Polperro or Penryn will play Illogan or Liskeard, while Sticker take on Mousehole or Wendron.
Ties to be played on April 4 and 5.
Cornwall under-18s' FA County Youth Cup semi-final against Durham will kick off at 2pm - not 1pm as first stated - at St Blazey on Saturday.
Falmouth Town's Ollie Walker is again selected in the squad, as are Helston pair Matt Buchan and Tyler Oliver.
Porthleven trio Jack Webber, Joel Allen and Max Roberts are also in the final 19.
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