Sonja gave us two litters from Terra Nova’s Aston, a famous Groenendael in those days. Aston was a working dog with a strong character and an excellent type. Aston was a large dog but well proportioned.
Terra Nova's Aston was a working dog who was certificated with VH-11. This was very difficult to achieve because the owner of Terra Nova's Aston was wheel-chair bound and the demands of the VH-11 program were very high. This was a great reflection on both the temperament of the dog and ability of the owner, especially as they achieved very high results.
(Wim & Bertha Grosman, v't Guitpad)