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)
Although in some instances foster parents and foster care agencies have the legal responsibility to nurture a minor, they are not entitled to the full status of parent. 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.