Testamentary Trust
A trust created as a result of explicit instructions from a deceased's will.
Investopedia Commentary
Typically, the remaining estate of the deceased (trustor) will act as the body of the trust, and the executor will manage it until the beneficiaries are capable of doing so individually.
See also: Beneficiary, Estate, Inter-Vivos Trust, Trust, Trustee, Trustor, Will
testamentary trust