Ceara was born to Eoghan and Tamsin somewhere unknown in Simland. When she was just a toddler, her parents moved to Sunset Valley together with the Sinclair family, and their son, Lucas, with both families moving into 250 Redwood Parkway.
Tamsin proceeded to have an affair with Archer Sinclair, which lead to a series of fights and an long-term frosty atmosphere in the household. After Ceara aged up into a child, Tamsin and Eoghan reconciled and decided to remain together, much to her delight. However Archer and his wife Opal split up, leaving her best friend and roommate from birth Lucas with a broken family.
The remnants of the two families decided to stay together as one household, much to the shock of the community and to Ceara, and they moved to 65 Maywood Lane, along with Archer's new girlfriend Kate Pistachio, as she and Lucas aged up into teenagers.