Blankenham is situated on the dike along the former Zuiderzee. It was named after Frederick of Blankenheim, the Prince-Bishop of Utrecht who gave the villagers permission to build a church and establish an independent parish.
The location of Blankenham is tied to a historical event: the granting of permission by Frederick of Blankenheim, the Prince-Bishop of Utrecht, for the villagers to build a church and establish an independent parish on the dike that once formed part of the Zuiderzee.