I've been wondering about the name Cedone and found this birth reg. :
Cedone Warner O-D 1891 3b 160 Wellingborough
She is on the 1901 census, living in Finedon , as Codone Warner with her mother Sarah Jane, born Wednesbury 1851, and siblings .
(RG13 1444 84 10)
I cannot see her in 1911 and cannot find a death or marriage for her.
Tracing the family back to 1891 they are in Finedon with father Alfred Warner b Finedon 1851 a boot finisher.( RG12 1214 85 9). Alfred Warner was absent from the 1901 census and there is a possible mention of him in the Northants Mercury 17 June 1904 :
Arthur Warner , Finedon , charged on April 27 with deserting his wife and family and on June 11 with using obscene language.
Also in the same paper 2 Dec 1892 : Alfred Warner , Finedon, charged with threatening his wife. In 1893 he was sent to prison and then bound over for assaulting his wife.
I think Sarah Jane Warner died 1906 O-D Wellingborough 3b 71.
Is it possible that Cedone moved away to escape her background and changed her name ? There is nothing to connect her with Phyllis other than the name and the year of her birth.