icdbd-QA/0019: can I give zakaah to my uncle though my aunt may have nisaab amount of gold ornaments

My aunt had been living in Libya with her husband for last 25 years. Recently she has returned from there in the wake of current war there. She and her husband (my uncle) has 6 children. They could not bring any money or valuables with them other than some gold ornaments of my aunt. I do not know the exact amount of gold. Now they are living with my uncle’s mother. They are living hardly off some rents from a few shops on that same land. The land though is in my uncle’s name has certain disputes and my uncle cannot sell it off to bear their expenses. Besides, their current house is built on it. My question is can I give zakaah to my uncle though my aunt may have nisaab amount of gold ornaments considering that it’s not her duty to bear their family expenses? Fi Amanillah