Sherwood Forest sound played on my iPad and I can’t find out why. What was I being notified of how I see what requests I made for this sound?

Start by checking your Sound settings:

Settings > Sounds

If you don’t see an sound that matches the assigned sound, you’ll have to manually search through the Notification settings for each individual App - and identify those that have the ability to choose the individual sound.

Perhaps begin with Mail - as each mail account can individually configured in addition to setting a default sound:

Notifications > Mail > Customise Notifications >

• [Accounts] > Sounds - check for each configured Mail account
• VIP
• Remind Me

How do I find which app is playing Sherwood Forest every morning at 7:45?