( ( He ( ( ( was ( ( the ( fourth son ) ) ( of ( the ( royal couple ) ) ) ) ) , ) ( ( the ( first two ) ) ( having ( died ( in infancy ) ) ) ) ) ) ( , ( ( ( the third ) ( -LRB- ( Alfonso -RRB- ) ) ) ( ( ( ( died later ) ( the ( same year ) ) ) ( as ( ( Edward 's ) birth ) ) ) . ) ) ) )
(ROOT (S (S (NP (PRP He)) (VP (VBD was) (NP (NP (DT the) (JJ fourth) (NN son)) (PP (IN of) (NP (DT the) (JJ royal) (NN couple)))) (, ,) (S (NP (DT the) (JJ first) (CD two)) (VP (VBG having) (VP (VBN died) (PP (IN in) (NP (NN infancy)))))))) (, ,) (NP (NP (DT the) (JJ third)) (PRN (-LRB- -LRB-) (NP (NNP Alfonso)) (-RRB- -RRB-))) (VP (VBD died) (ADVP (RB later)) (NP (DT the) (JJ same) (NN year)) (PP (IN as) (NP (NP (NNP Edward) (POS 's)) (NN birth)))) (. .)))
He was the fourth son of the royal couple, the first two having died in infancy, the third (Alfonso) died later the same year as Edward's birth.
(ROOT (S (NP (NP (DT The) (JJ first) (NN year)) (PP (IN after) (NP (NN birth)))) (VP (VBZ is) (VP (VBN called) (NP (NN infancy)))) (. .)))