Monio Ermiges (1050 - 1107) was a nobleman of the County of Portucale and holder of the feudal lordship of Ribadouro, a Portuguese parish in the municipality of Baião.
Family
He was the son of Ermigio Viegas (1020 -?), lord of Ribadouro, and Unisco Pais (1030 -?). He married Ouroana (1060 -?), with whom he had:
Egas Moniz, the Tutor (1080 - 1146) married twice, first to Dórdia Pais Azevedo and second to Teresa Afonso Nunes de Celanova.
D. Mem Moniz de Riba Douro (1075 - 1154) married twice, first to D. Gontinha Mendes and second to Cristina Gonçalves das Astúrias.