A buyer broker agreement is a contract with the buyer and the broker to work together for a specified time period to help the buyer find a property.
Posthumous [ a. - Born after the death of the father, or taken from the dead body of the mother; as, a posthumous son or daughter. - Published after the death of the author; as, posthumous works; a posthumous edition. - Being or continuing after one's death; as, a posthumous reputation. Meaning of 'posthumous' (Princeton's WordNet)
A child is the issue or offspring of his parents. A posthumous child is one conceived prior to, and born after, the death of his father. Such a child has the same inheritance rights as a child born while his father is alive. A child is not entitled to full legal rights unless the child is born alive.