Sunyer I was count of Empúries and Roussillon

Roussillon

Roussillon is one of the historical counties of the former Principality of Catalonia, corresponding roughly to the present-day southern French département of Pyrénées-Orientales...

 (with the pagus of Perelada) from 834 to 841.

He was the son of Count Belló I of Carcassonne

Bello of Carcassonne

Bello was Count of Carcassonne from 790 until his death. He was the founder of the Bellonid Dynasty of Carcassonne and Razes which reached its apex in Wilfred the Hairy, progenitor of the House of Barcelona....

.

He was deposed in 841 due to a new policy of the Frankish Emperor

Holy Roman Emperor

The Holy Roman Emperor is a term used by historians to denote a medieval ruler who, as German King, had also received the title of "Emperor of the Romans" from the Pope...

, he died in 848. His eldest son, Sunyer II, was later a count of Ampurias

Ampurias

Ampurias may refer to:* Empúries in Catalonia, Spain* Castelsardo on Sardinia, Italy...

 (with Perelada) and Roussillon and another son, Delà

Dela

Dela , count of Empúries , was the son of Sunyer I of Empúries, whom he succeeded along with his brother, Sunyer II of Empúries, in 862....

, an associate count of his brother.