1) Dutch surname 2) Town in Westphalia 
[automobile] The Altena was a Dutch motorcycle and automobile made by NV Haarlemsche Automobiel & Motorrijwielfabriek, based in Haarlem-Heemstede from 1900 to 1906. The first car built was powered by a 3.5 hp De Dion single-cylinder powerplant. From 1905 models having 8, 10, and 12 hp engines were offered. The company was declared bankrupt ...
Altena is a cultivated variety of potato.