Candice Summerfield's mother
From Tardis Wiki, the free Doctor Who reference
Candice Summerfield's mother was one of Dylan Summerfield I's "space-hippie girlfriends". She gave to his gave birth to his daughter, Candice Summerfield, in 2188.
The record of this birth was kept until the 26th century. Christine Summerfield learned about this when she read the Summerfield family tree. (PROSE: Dead Romance)