linnie, inquire from the credit company whom they sold the account to. They may help you with this info because they are the ones who sold it out. But, most of the times, they don't want to pull out records buried inside.
The new creditor will appear in your credit file after they have reported with the bureaus. Sometimes, they hit quick enough, sometimes, it is lined up in a 'Q'. If they get in contact with you and have your accounts, they will enter the item in your file. From that point, you will have to handle the matter as required. Be aware of the statutes while talking with the company asking for a payment.
Boyfriend!! He was even painful than a collector, I guess.. It's good that you have come out of this pain before getting deeply in it. sucks!! How is your health now, Linnie