Grape Seed Found in Toilet of Medieval Hospital Reveals 600-Year History of Pinot Noir in France

In a fascinating discovery that links centuries past to modern viticulture, researchers have found a 600-year-old grape seed in the unusual setting of a medieval hospital toilet in Valenciennes, France. The seed, unearthed in what were once considered rubbish bins, holds remarkable significance: it is genetically identical to the grape varieties currently used to produce pinot noir wine.

A recent study published in *Nature Communications* reveals that the genetic profile of this medieval grape seed matches that of contemporary pinot noir seeds, suggesting that the tradition of cultivating these grapes has endured for nearly six centuries. The findings provide direct evidence of the durability of this iconic grape variety, renowned for its role in the global wine industry.

Ludovic Orlando, a paleogeneticist from the University of Toulouse, expressed the intriguing notion that figures from history such as Joan of Arc may have enjoyed the same type of grapes we consume today. He remarked, “Even Joan of Arc could have eaten the same grapes as us,” highlighting the deep-rooted connection between modern and historical agriculture.

The study examined the entire genetic makeup of 54 archaeological grape pips, dating back from the Bronze Age to the Middle Ages, thus allowing researchers to trace the evolution of grapevines over a span of approximately 4,000 years. This extensive analysis underscores France’s longstanding role as a central hub for the progression and dissemination of viticulture.

Laurent Bouby, a co-author of the research, emphasized that while it’s uncertain whether grapes were eaten fresh or fermented into wine during the medieval period, the findings affirm France’s historic position in cultivating grape varieties that would eventually shape the wine industry. As noted in the study, clonal propagation—where plants are multiplied through non-seed methods such as cuttings—has been a fundamental practice in viticulture since at least the 15th century.

The researchers’ discovery further supports the idea of well-established exchange networks across vast regions and time periods. Their findings suggest that genetically identical grape clones existed across various areas, indicating that these networks have been active since at least the Iron Age, playing a pivotal role in the distribution of grape species.

Even today, France remains prominent in global wine production, underpinned by a rich cultural heritage and a robust rural economy reliant on viticulture. The nation is often regarded as a benchmark in winemaking excellence, helping to shape the standards by which many wines are judged around the world.

Michele Morgante, a geneticist at the University of Udine and not involved in the research, commented on the significance of the findings, noting that modern wine grape varieties are merely a few generations removed from their domesticated ancestors. He pointed out that this peculiar close relation is a stark contrast to other crops, such as maize, which are thousands of generations distant from their original forms. Morgante articulated that the most valuable contribution of the study is its ability to provide a clearer timeline regarding the emergence of fully domesticated grape varieties.

As the study draws connections between past and present agriculture, it highlights the importance of preserving the genetic integrity of grape seeds. The continuity demonstrated in the grape lineage opens up possibilities for future advancements in viticulture, ensuring that the timeless craft of winemaking continues to thrive while echoing the traditions of centuries ago.

This discovery serves as a vibrant reminder that humanity’s relationship with agriculture is deeply rooted in history, with the present day being an intricate tapestry woven of past practices.