Of course it would not have been called what we call it today, but was form of wine was it closest to?
I think some of these threads may be helpful.
How do the wines of history stack up against what you can readily buy today?
What did beer and wine taste like in the ancient world? - the answers here are mainly about beer but you might find it intriguing.
What did wine and beer taste like in ancient times? Did it resemble the beverages we know today?
How is the wine we drink today different from ancient and classical wine?
How does our current wine compare to the wine from the Medieval times, and older?
/u/Qweniden is flaired in the History of Alcohol and did an AMA on the History of Wine, Beer, Cider, and Mead that you may find interesting. You'll see several of these posts with their response.
I hope this helps.