There is no legal impediment to anyone suing anyone else. However, you're going to need to document, gather witnesses, etc. See Avvo.com under Find-A-Lawyer. Enter 'Litigation' and 'Allentown PA' to find several well-qualified attorneys nearby. Good Luck!
As Mr. Potter states, you have the opportunity, and it sounds like you have several grounds for possible victory. Evidence will be an issue, and you will need to act quickly, as statutes of limitations are a bar to any recovery. Speed is always advised when you've been wronged.
Matthew Johnson phone# 206.747.0313 is licensed in the State of Washington and performs bankruptcy, short sale negotiations, and estate planning in Whatcom, Skagit, Snohomish, King and Pierce counties. The response does not constitute specific legal advice, which would require a full inquiry by the attorney into the complete background of the facts and circumstances surrounding this matter; rather, it is intended to be general legal information based on the limited information provided by the inquirer; it This response also does not constitute the establishment of an attorney-client relationship, which can only be established after a conflict of interest evaluation is completed, your case is accepted, and a fee agreement is signed. Johnson Legal Group, PLLC
I agree with my colleagues and cannot emphasize enough that you and your brother need to get an attorney and need to do so quickly. There are many fine attorneys in your area. If your mother had an attorney for the divorce, that may be a good person to get referrals from if you respect him or her. I can't tell your age from this question but you may also have friends and co-workers who have had good experiences with attorneys who may either handle this type of matter or refer you to attorneys who do. Get moving on this and good luck!
Disclaimer: Please note that this response does not in any way an attorney-client relationship between Kathryn L. Hilbush and the recipient. My responses are general in nature. They do not constitute legal advice. You are advised to consult an attorney regarding this and any other legal matters.