If I have 2 firearms stored at a family members house but his family member had a drug conviction about 10 years ago, can I be in any kind of legal trouble for storing my guns there?

Unless you are a convicted felon, you are free to keep your firearms at your house or a relative's home.  However, if your relative is a convicted felon, he/she would be arrested if law enforcement discovers firearms in his/her residence.  Once an individual is convicted of a felony, the convicted felony may not possess or have any firearms in his/her home or motor vehicle, or in his/her possession.