By 709, Offa, son of their father's co-king and later rival, Sighere was at least heir apparent and perhaps joint ruler of Essex when he traveled with King Cenred of Mercia to Rome.
Por 709, Offa, fillo do correxente co seu pai e posterior rival, Sighere era polo menos herdeiro aparente e quizais cogobernante de Essex cando viaxou co rei Cenred de Mercia a Roma.