He was long mistaken for a senior bishop, as by Carlos González de Posada, who interposed his episcopate in that of Oveco for the years 915–22, and Manuel Risco, who placed it in 921–26.
[4] The acts of the council are preserved in the Tumbo Nuevo of Lugo Cathedral, and Hermenegild's name is attached to them.
A date of 14 June 927 that comes down to us in one copy of the acta is certainly false, as Alfonso III was long dead at the time, but the alternative date of 7 May 899 provided by another copy is consistent with the names of all signatories of the acta.
[5] Hermenegild's name appears on a document dated 27 May 912 in the Libro de los testamentos, but it is probably a falsification of Bishop Pelagius.
[6] The next reliable document mentioning Hermenegild dates from 8 August 921, also preserved in the Libro.