OWEN AND ALICE REES

They are definitely not her children. She had two sons called Linford and Rhys Cazenove, and the elder boy appeared in the first series as Ginny Carter's baby and as baby Jeremy. Sadly, he was killed in a car accident at the age of twenty-five. However, the Rees children most likely were her nephew and neice, or relations of some sort. Several of the cast members had young children - Ralph Bates, Jill Townsend, Richard Morant - and, according to Robin Ellis, most of them made small appearances in Poldark.