Nitrocris Susan Holland 1848 1929

looking for information on this lady and her family.
all that i know about her is that she was born in baghdad
she died in lffracome,england
she married walter john powell[1841-1913]
they had 3 children gertrude blanche powell[1872-1960] john osborne powell 3.charles powell
john may have been known as jack
looking for information regarding this family please