Robert "Robie" Scott Johnson is the biological son of David Johnson and Anne Scott , the stepson of David's former assistant, and the younger maternal half-brother of Amy Underwood and Ashley Juergens.
History[]
Robie was named after his maternal grandfather, Robert Scott. Anne was placed on bed rest for a few weeks before Robie was born and he ended up being delivered at home by George.
Although Robie does not resemble any of his immediate family, he does take after his maternal grandmother, Mimsy, who also has blonde hair and blue eyes. George thought Robie was David's son until Anne told him that the dates of conception and David's near the medical impossibility of being able to have biological children made her sure that Robie was his son. However, when George saw that Robie didn't look like him, he became skeptical, but eventually brushed it aside.
When Anne discovered that David later had twin daughters, she became suspicious of Robie’s paternity. In the episode, It's a Miracle, George had already taken a paternity test, which confirmed that David Johnson was Robie’s biological father.