Massachusetts General Laws
Article 4 - Creation, Validity, Modification and Termination of Trust
Section 417 - Combination and Division of Trusts

Section 417. Combination and division of trusts
After notice to the qualified beneficiaries, a trustee may combine 2 or more trusts into a single trust or divide a trust into 2 or more separate trusts, if the result does not impair the rights of any beneficiary or adversely affect achievement of the purposes of the trusts.