This template should be called by passing a variable to it for the closest monarch of the House of Oldenburg. For example, {{House of Oldenburg|christian1}}. This calls only the relevant part of the template, as well as getting around the fair use violation that would occur if the arms images were directly on this template.
Variables
christian1 - for Christian I and his descendants
john - for John and his descendants
christian2 - for Christian II and his descendants
frederick1 - for Frederick I and his descendants
christian3 - for Christian III and his descendants
frederick2 - for Frederick II and his descendants
christian4 - for Christian IV and his descendants
frederick3 - for Frederick III and his descendants
christian5 - for Christian V and his descendants
frederick4 - for Frederick IV and his descendants
christian6 - for Christian VI and his descendants
frederick5 - for Frederick V and his descendants
christian7 - for Christian VII and his descendants
frederick6 - for Frederick VI and his descendants
christian8 - for Christian VIII and his descendants
frederick7 - for Frederick VII and his descendants