LIEUTENANT IVOR CYNRIC SALUSBURY-JONES
KING'S OWN YORKSHIRE LIGHT INFANTRY
21ST SEPTEMBER 1916 AGE 22
BURIED: PUCHEVILLERS BRITISH CEMETERY, FRANCE
The ancients referred to the east as toward the sunrise, or sunrising, but Mrs Salusbury-Jones is specific, the context of the phrase is Joshua 1:15.
Until the Lord have given your brethren rest, as he hath given you, and they also have possessed the land which the Lord your God hath given them: then ye shall return unto the land of your possession, and enjoy it, which Moses the Lord's servant gave you on this side Jordan toward the sunrising.
Despite providing the context, I don't really understand what Ivor Cynric Salusbury-Jones' mother meant by the phrase. Without the specific reference the phrase carries the implications of new down, resurrection, eternal life.
Ivor's brother, Merfyn Harman Salusbury-Jones was killed in action on 11 August 1918. His body was never found and he is commemorated on the Vis-en-Artois Memorial.