CRA states that a beneficiary of a qualified disability trust must be specifically named by the deceased individual

One of the requirements for a testamentary trust to qualify as a qualified disability trust is that each of its beneficiaries be an individual “named as a beneficiary” by the deceased individual. CRA stated:

This term refers to a beneficiary whose name is specifically stated in the instrument under which the trust was created.

Consequently, a beneficiary who is part of a class of persons described in the instrument under which the testamentary trust has been established, such as children or descendants of the deceased individual, as well as a beneficiary who is not yet born, would not be considered as a named beneficiary.

Neal Armstrong. Summary of 7 October 2016 APFF Financial Strategies and Instruments Roundtable, Q.6 under s. 122(3) - qualified disability trust - para. (b).