There are 3 parties with an interest in the house: your father in law, his companion, and your mother in law. You will need a deed from all 3 to put the title
in your name.
Please note that if you can get warranty deeds
from your father in law and his companion,instead of quitclaim deeds, it would be much better for you. A quitclaim from your mother in law would be enough because she is not on the title.
If you can't get these deeds from all 3, you won't have clear title and you'll have a legal mess that could be expensive to fix.
I hope this answers your question. If there is anything that you do not understand, please let me know and I will be happy to explain further.
In the meantime, please click "Accept" so that I may be paid for my answer and any subsequent follow-ups with you.
The Judge (actively practicing Texas lawyer and former Texas trial court judge
P.S. I am frequently asked how someone can specifically request that I, personally, answer a question. Here’s how: for new questions in the future, always begin your question with “QUESTION FOR THE JUDGE.”