Career
She was also Countess of Hoya by marriage from 1568 to 1575 and Countess of Lippe by marriage from 1578 until her death. Armgard was the elder of two daughters of John II and Agnes of Bentheim-Steinfurt. Armgard married on 3 January 1568 Count Eric V of Hoya.
He died on 12 March 1575.
Armgard then married on 26 June 1578 Count Simon VI of Lippe. Her father died on 11 December 1562.
On 27 September 1576, Armgard and Walburgis divided their inheritance: Armgard received Rietberg. Walburgis received the Harlingerland.