72) Regesten der Erzbischöfe, II, no. 1386 § 42. Gerhard of Diest would meanwhile draw an equivalent
rent from estates at Lechenich. The most advanced discussion is by Matscha, Heinrich I. von Müllenark, 71-8, who on this point follows Möller, Stamm-Tafeln, II, 146. However, Gerhard of Diest's wife is unlikely to
be Sophie, since the source does not repeat her name in connection with him. Ermengarde, apparent wife of
Count Hermann of Saffenberg-Müllenark (both mentioned in the "Knechtstedener Mortuar," see Gosses,
"Knechsteden," 49, with erroneous attribution to thirteenth-century persons of non-comital rank), is
presumably a sister of Sophie and Jutta, and Gerhard of Diest's wife would be Ermengarde's daughter.
Geldern, Looz, and Public Succession
Door Donald C. Jackman
https://books.google.es/books?id=PecGn2Is8HEC&pg=PA19&lpg=PA19&dq=Gerhard+van+M%C3%BCllenark&source=bl&ots=3K1zICZBQx&sig=ACfU3U13yhFRTGmZjpdeDKhD9GgBhxCBfQ&hl=nl&sa=X&ved=2ahUKEwiO4JPYoL73AhWJyIUKHX4vBMEQ6AF6BAgMEAI#v=onepage&q=Gerhard&f=false
Sie ist verheiratet mit Gerard van Diest.
Sie haben geheiratet
Kind(er):
von Saffenberg . The primary source which confirms her parentage and marriage has not yet been identified. Heiress of Müllenark. m KONRAD van Diest, son of --- (-after 1216).]
https://fmg.ac/Projects/MedLands/FRANCONIA%20(LOWER%20RHINE).htm#HermannSaffenbergdied1172