To understand its greater role we have to talk about the Curia regis, the "King's Council." This was the term used to refer to the advisors and administrators of the king. In England, the Anglo-Saxons had their witan or witangemot. After the Norman Conquest, although the English still used the old term, official records use Curia regis. The Curia included barons, bishops and abbots, the chancellor, constable, stewards, chamberlain, marshal, etc.
With Henry, management of the Wardrobe absorbed oversight of the Curia as well, making the Keeper an even more prestigious position. The Wardrobe took over administrative and accounting duties for the entire Household. This required it to receive large sums from the other important office, the Exchequer. It did not, however, always have to turn to the Exchequer: because the Wardrobe included treasure, the king could make his own quick financial deal without going through official channels.
As the Wardrobe took on more responsibility for management of the government, it became too large to keep in one place. During the reign of Henry's son Edward, the Wardrobe divided into one managing the king's personal expenditures versus the Great Wardrobe, which managed cloth and clothing and spices. Separate Privy Wardrobes containing the king's personal effects such as clothing and jewelry (the illustration is of a Privy Wardrobe at Westminster). The Privy Wardrobe in the Tower of London maintained his armor and weapons.
The position—along with the Wardrobes as they were originally envisioned and evolved—no longer exist. In 1782 these divisions were eliminated. The position was so powerful when it existed that the person holding it could wield great authority, even against the king's family. For that story we'll look at one of these men, Walter Langton. See you tomorrow.