Michael Gregson was the son of James and Julia Gregson. His sister was Sarah. The family received a visit from Melanie Bush on Christmas day in 1935 when she was looking for the Seventh Doctor. Meanwhile, the Doctor was in 1995, where he met the adult Michael, who was an archaeologist.

The Gregsons' house was located on a temporal volcano. On Christmas night, the house burned to the ground, but the Doctor rescued the entire family. (PROSE: 24 Crawford Street)