The peace agreement was well received in Spain. There were big public celebrations in the Spanish capital Valladolid from April to June 1605 in honour of the treaty and of the birth of Philip's son Philip IV of Spain. Also present were the English ambassadorial delegation (which numbered 500) led by Lord Admiral Charles Howard. He had been sent by James I in return for Don Juan de Velasco having been sent to England to negotiate the peace the previous year. The English delegation were welcomed with a warm reception and honours on 26 May which included Howard being received at the English college. The treaty was then ratified in the Royal Palace of Valladolid in the presence of Howard the following month. Some voices from the Catholic Church, however, expressed its concern to Philip III over his settlement with a "heretical power", especially Juan de Ribera, then bishop of Valencia who protested. Once the agreement was concluded, Philip III appointed Don Pedro de Zuñiga as first Spanish resident ambassador to England.