Sean Brosnan: Sean Brosnan. Actor: My Father Die. Sean Brosnan is the son of Cassandra Harris (d. 1991) and Pierce Brosnan, who was married to Cassandra from 1977 until her death on 28 December, 1991. He has a half/adopted sister and half/adopted brother, Charlotte Brosnan and Christopher Brosnan (daughter and son of Cassandra and Dermot Harris, who were adopted by Pierce after Dermot died in 1986) from his father's first marriage; as...
