Born into an UCPB family, Arthur was disowned for marrying a muggleborn witch. Deeply family-oriented and honorable, probably the most dishonorable thing he's done in his life is get an unmarried woman pregnant--which, to be fair, he rectified very quickly, at great personal expense to himself. He does genuinely love his wife and son... and mostly tolerate his grandmother-in-law for their sake. James, for his part, idolizes his father and desperately wants to make him proud. He's just... also a bit of a disaster child.

Called Ellie by her family, she was raised by her grandparents after the death of her parents when she was still quite young. While generally warm and kind-hearted, she has also always been very driven and chose to pursue a career, even after marriage and motherhood. Her relationship with Arthur Callum was a very unlikely pairing that nonetheless somehow works.

A formidable, no-nonsense kind of woman, Jane McKinley nonetheless has a soft spot for her only great-grandchild. She values her family above all else, even if she's still a bit leery about magic in general. She's also never quite forgiven Arthur for knocking up her granddaughter, and the two have never had better than a barely civil relationship.