Need help with correct pronunciation of family name Orendain

I am having an audiobook produced, dedicated to my great-grandmother,
Hipolita Orendain de Medina. I need to know the correct Spanish
pronunciation of "Orendain." I've gone to a variety of resources online,
but they don't all agree. I have no contact with any living relatives in
Mexico. Is the "dain" part of the name pronounced similar to the English
"dain" (long a sound), "dine" (long i sound) or "dean/deen" (long e sound)
? And where should the accent mark fall?

I truly would appreciate your assistance.

Thank you,
Laurel Anne Hill