[3][5][6] Historian Ian Wood stated that Irmina is "traditionally, and probably correctly, identified as Plectrude's mother".

They had several daughters, including: After the death of Hugobert, around 697, she built her a monastery at Oeren in Trier, which was eventually named after her, and where she succeeded as abbess her sister, Saint Modesta.

Irmina donated lands to help co-found, with Saint Willibrord of Northumberland, the convent in Echternacht in 697 or 698.

[3][4][5][7] Historian Jamie Kreiner called the founding of the Echternacht convent "a cooperative venture"[2] between Willibrord and Irmina's family, who later promised to protect the convent and its holdings after Willibrord promised fidelity to them in 706.

[2] Watkins reported that Irmina was "generous to both Celtic and Saxon missionary monks".