 His realms incorporated not only Provence (from 1166 or just before), but also the counties of Cerdanya (1168) and Roussillon (inherited in 1172).Béarn and Bigorre paid homage to him in 1187.Alfonso's involvement in the affairs of Languedoc, which would cost the life of his successor, Peter II of Aragon, for the moment proved highly beneficial, strengthening Aragonese trade and stimulating emigration from the north to colonise the newly reconquered lands in Aragon.