He was shocked that Rachel was also lady Blackwood. Darren knew that the Blackwood family and he knew that they were as infamous as the Black family. They also had a lot of influence in the magical community. Of course, Darren knew that it would be a bad idea to make an enemy of the Nott and Blackwood family, but the woman was a family member of his and Darren was not going to throw her away. Rachel also made an agreement that in case, they died that Theo’s custody should belong to Darren and he should take care of the proxy of both the Nott and Blackwood seats. Darren agreed and vowed that he would take care of Theo and would not abuse him.