Jean Albert Gregoire was born in 1899 and served during World War 1. He ran an automobile business in Versailles and began racing an Amilcar and a Bugatti. He was not related to the manufacturer of the other car to bear the Gregoire name. 

(more details at Unique Cars and Parts)

1955 Gregoire Sport Cabriolet emblem. (©Photo by Segura)
1955 Gregoire Sport Cabriolet emblem. (©Photo by Segura)
1955 Gregoire Sport Cabriolet. This car's chassis was assembled from cast-aluminum components. It has rack-and-pinion steering and four-wheel independent suspension with variable flexibility. The engine has a compressor. (©Photo by Segura)
1955 Gregoire Sport Cabriolet. This car’s chassis was assembled from cast-aluminum components. It has rack-and-pinion steering and four-wheel independent suspension with variable flexibility. The engine has a compressor. (©Photo by Segura)
1955 Gregoire Sport Cabriolet. This car's chassis was assembled from cast-aluminum components. It has rack-and-pinion steering and four-wheel independent suspension with variable flexibility. The engine has a compressor. (©Photo by Segura)
1955 Gregoire Sport Cabriolet. This car’s chassis was assembled from cast-aluminum components. It has rack-and-pinion steering and four-wheel independent suspension with variable flexibility. The engine has a compressor. (©Photo by Segura)
1955 Gregoire Sport Cabriolet. This car's chassis was assembled from cast-aluminum components. It has rack-and-pinion steering and four-wheel independent suspension with variable flexibility. The engine has a compressor. (©Photo by Segura)
1955 Gregoire Sport Cabriolet. This car’s chassis was assembled from cast-aluminum components. It has rack-and-pinion steering and four-wheel independent suspension with variable flexibility. The engine has a compressor. (©Photo by Segura)
1955 Gregoire Sport Cabriolet. This car's chassis was assembled from cast-aluminum components. It has rack-and-pinion steering and four-wheel independent suspension with variable flexibility. The engine has a compressor. (©Photo by Segura)
1955 Gregoire Sport Cabriolet. This car’s chassis was assembled from cast-aluminum components. It has rack-and-pinion steering and four-wheel independent suspension with variable flexibility. The engine has a compressor. (©Photo by Segura)