Hi,

You or your cousin may want to join the "Jewish Genealogy in Romanian Moldova" group https://www.facebook.com/groups/1465078043774333/ 

Particularly, Sorin Goldenberg, one of the admins, has gathered a large database and is versed in this kind of work. He should be able to either help you  or point you in the right direction. I assume that an official certificate may need to be obtained from local authorities.

Best of luck,
Theo Rafael
Bucharest, Romania