Do you have Virginia (McNabb) (Taylor) Atkinson's obituary? It should name all her surviving children and siblings and should also tell where they were living.
I am sure you know that she died 4 Sep 1986 in Lynwood, Los Angeles County, California.
Do you know when she married Mr. Atkinson? So you could estimate Phyllis' age? There is a Phyllis A. (for Atkinson??) Parrish living in Sacramento - she was born in 1957. Use www.zabasearch.com as a directory search.