Uncle's Alzheimer’s means I don't know what was agreed

Around 10 years ago, my uncle had to go into a home as he developed Alzheimer’s - will that change his tenant's rights to the land?

Around 10 years ago my uncle had to go into a home as he developed Alzheimer’s - will that change his tenant's rights to the land?

Dear Stephen, 

Last year, I inherited lands from an uncle who had no children. Around 10 years ago, my uncle had to go into a home as he developed Alzheimer’s.