Choosing a trustee to manage funds for your children is second in  importance only to choosing a guardian for them.  I advise separating the trustee and guardian duties.   Unlike the author, if there is no perfect candidate, I recommend a bank or trust company rather than two “B” candidates.   After all two Bs, still average a B.  If there is not a suitable family member, go for the “A” of professional investments and management provided by a trust department.