Personal loans

it seems I have a few personal loan accounts that are open on my credit report. So I have a two-part question.? Once the account has been sold to a collections agency is there a way for me to see where the account originated from? because all I can see it this time is the name of the collection agency was sold to. And question number two. If I have more than one loan the same credit collector would it be possible or beneficial for me to consolidate those loans into one account instead of having multiple open accounts with one credit collector?

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