Hi there John and welcome
What exactly have you lost in regards ***** ***** when you say Bookmarks, do you mean in Safari?
If you go to Settings, iCloud, do you still see it signed in with your original Apple ID?
You need to reply to my question please John
ok, sign in with your Apple ID and password ***** you originally used please.
What wont it let you sign in? Whats the message you receive?
yes, I am here,
But your response is not top clear, you cannot make a new account if you want to bring the old data back.
Else you need to start from new again
What happens when you press sign in?
hold the home and power buttons for about 10 seconds until you see the apple logo then release
Let it restart then try please.
it does not react?
yes, I understand your requirement John..
You do not reinstall iCloud.
Go to settings, general, reset, reset all settings, then restart and tell me if you can sign in.
ok, then your not going to be able to get the settings back, this is confirmed,
Now if you wish to sign back into your iPad your going to have to do a full reset of it, which will wipe all your data and return it to new, but it is something you cannot avoid
Then as you set it up again it will ask you to sign in.
To do this, go to settings, general, reset, erase all data and reset
Let this complete then as you are setting it up you will sign into your iCloud account again and at least get the apps back you purchased