Hello and thank you for your question. Welcome to the forum. So, you have a grandparent and parent that have hearing loss in one ear? You are wondering if this is something that can be caused by genetics and inherited. There are many causes of hearing loss. There are genetic causes of hearing loss and are most often seen in babies. There is also the gradual hearing loss many go through as they age. When did your family members being to have hearing loss? What was their age? https://www.mayoclinic.org/diseases-conditions/hearing-loss/symptoms-causes/syc-20373072 and https://www.cdc.gov/ncbddd/hearingloss/genetics.html.