My sister-in-law was a tenant-in-common and passed away leaving her estate to her sister and brother in law and in trust for their two minor children. 1. Please confirm which forms I need. 2. Who should be signing the deed of transfer (TR1 box 12). 3. Are certified copies of the will/probate/ID needed. 4. Can forms be signed/witnessed as counterparties (I live in Canada).