Can I take legal action against any parties involved?

You should write the credit reporting agencies and dispute the debt. They will investigate and remove the debt from your credit report. You could...

I'm looking for a contingency lawyer to submit a statement to the judge as a last will in New York City.

Her statement is not a will. If there is no will she died intestate. The statute will determine who is the beneficiary.

Does the document I signed count as a lease?

I would want to read the document before advising you. However, it sounds like the document has expired likely making you a month to month tenant.

I bought a 17 foot easement from my new neighbor who now is saying that it is her land and i can not use it any longer , i was

If you truly have an easement your neighbor can't stop you from using the land.

Workers compensation denial

You will most likely require a hearing to have your claim established. The denial reasons are standard defenses raised by the insurance company. ...

It may be the account was a Totten Trust, or a "payable on death" account. If so you became the owner of the funds in the account when she passed.

Does the latter situation legally prevent the lender from evoking the "Due on Sale" clause.

The terms of the mortgage were agreed to at the time of the loan. Read the mortgage. The answer to your questions will be there.

Your affidavit stating those judgments are not yours will solve the problem.

As a general rule that is NOT correct. I supposed that the note could say that but it would be unique. Read the note you are asked to co-sign.

Do siblings have to be bought out in this situation?

Was there a will? Was the house a specific bequest to one of the siblings? If not you would probably have to but out the siblings. Be careful,...