 Construction was initially overseen by the planter Daniel French of Rose Hill, a member of the congregation.He died before completion of the building works, and oversight passed to William Buckland, who was also involved in the building of Gunston Hall nearby, and who may have participated in the decoration of the church interior as well; it is possible that Buckland took over the work at the instigation of his employer, George Mason, who had assumed many of French's debts and obligations at the latter's death.Much of the original woodwork in the building was executed by master carver William Bernard Sears, a longtime associate of Buckland's who was also attached to Gunston Hall, likely in indenture to Mason, and is known to have worked at Mount Vernon as well.