A chantry or (from Latin) obiit ("he has departed"; may also refer to the mass or masses themselves) was a form of trust fund established during the pre-Reformation medieval era in England for the purpose of employing one or more  priests to sing a stipulated number of masses for the benefit of the soul of a specified deceased person, usually the donor who had established the chantry in his will, during a stipulated period of time immediately following his death. It was believed such masses would speed the deceased's soul through its undesirable and indeterminate period in Purgatory onwards to eternal rest in Heaven. Clearly once the soul had reached Heaven the ideal state for the Christian human soul had been attained, and the saying of masses would serve no further function. Thus the concept of Purgatory was central to the perceived need for chantries. Chantries were commonly established in England and were endowed with lands, rents from specified properties and other assets by the donor, usually in his will. The income from these assets maintained the chantry priest.