"Ranemirus" [brother of Alfonso IV King of Leon] granted "villa…Crexemir" {Creixomil} to "Ermegildus et Mummadomna" by charter dated 22 Feb 926, witnessed by "Aloitus Lucidi, Fredenandus Ouecoz, Fredenandus Alderotiz, Lucidus Aloitis, Froila Gundesindi…". "Honecca…cum filiis meis Munna, Ledegundia, Exemenus et Mummadonna" donated property to the monastery of Lorvão by charter dated 5 Dec 928, subscribed by "Honneca, Munnia, Ledegundia, Exemenus Didaz, Mummadomna, Aloytus Lucidi, Roderigus Tedoniz, Ermegildus Gundisaluiz, Gundesindus Didaz…". The order of the names of the subscribers suggests that the husbands of the donor´s daughters follow their wives, in order. "Mummadonna…cum filios meos Gunsaluus Didacus Ranimirus diaconus Onecha a deo uota Donnus nunus et Arriane" distributed property of "viro meo diue memorie Domno Ermigildo" by charter dated 5 Aug 950. ["Ranemirus…princeps" [Ramiro II King of Leon] granted "villa nostra propria Mellares" to "Mummadomna" the charter dated 18 May 952 (must be redated to before 950), subscribed by "…Ueremundus rex, Aloito Lucidi…Lucidus Aloitiz…". The anachronistic reference to "Ueremundus rex" suggests that the document is spurious.] "Mummadomna Didaci et Onecce filia", widow of "Ermegildo prolix Gundisalui et Tarasia", together with "liberos…amborum…Gundisalbus Didacus Ranimirus, Nunus Arriane et Onecce", donated numerous properties to Vimieiro monastery by charter dated 26 Jan 959, which also names "Gutier Roderici cum coniuge nate mee Onecce…germanus noster domnus Exemenus".
She founded the monastery of Guimarães in Portugal. "Mummadomna…castellum…sanctum Mames" issued a charter dated 4 Dec 968 subscribed by "Gundisalvo Memendiz, Rudesindus Roderici…Honneca Menendi filia, Flamula Pelagii filia, Uelasquita Pelagii filii". 1
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