One of the wife's brothers had come.
( ( One ( of ( ( the ( wife 's ) ) brothers ) ) ) ( ( had come ) . ) )
(ROOT (S (NP (NP (CD One)) (PP (IN of) (NP (NP (DT the) (NN wife) (POS 's)) (NNS brothers)))) (VP (VBD had) (VP (VBN come))) (. .)))
In attendance was one of my brothers-in-law.
( ( In attendance ) ( ( was ( one ( of ( my brothers-in-law ) ) ) ) . ) )
(ROOT (SINV (PP (IN In) (NP (NN attendance))) (VP (VBD was)) (NP (NP (CD one)) (PP (IN of) (NP (PRP$ my) (NNS brothers-in-law)))) (. .)))