The County of Holland was the wealthiest and most urbanized region in the world.

Ada was not actively involved in the governance of the County of Holland but was occasionally mentioned in documents.

It houses collections for the central government, the province of Zuid-Holland, and the former County of Holland.

Within the County of Holland it was Gouda which acquired the sole right to have a market in which Hollandic farmers could sell their cheese.

It was established in 1598 by Mennonite immigrants from De Lier in the County of Holland.

Count Gerolf is often regarded as the founder of the County of Holland, although the actual name "Holland" is from a later time.

Not only with Brabant, but also with the County of Holland and the Bishopric of Utrecht.

The County of Holland becomes a part of a personal union with the County of Hainaut.

They were one of the principal noble families of the County of Holland during the Middle Ages.

The center of power in these emerging independent territories was in the County of Holland.