 Jacob De la Gardie, Count of Läckö, was a prominent military commander who served as Lord High Constable of Sweden from 1620 until his death in 1652.Father of Jacob, and grandfather of Magnus Gabriel, was Baron Pontus De la Gardie, a French mercenary who had been in Danish service but made a career in Sweden after having been captured by Swedish troops in 1565.Pontus married Sofia Gyllenhielm, the daughter of King John III, in 1580.