Florence died in Lewisham in 1927
CLARKE, FLORENCE MARY JANE
Age at Death (in years): 30
GRO Reference: 1927 S Quarter in LEWISHAM Volume 01D Page 760
From Deceased Online free index
Florence Mary Jane Clarke
Died 21 Sep 1927
Buried 27 Sep 1927, authority Greenwich
1 other burial in grave
Burial seems to be at Woolwich Cemetery?
Likely also buried at Woolwich is
John Henry Clarke
Died 18 Dec 1928
Buried 24 Dec 1928, authority Greenwich
1 other burial in grave
Could they be buried together?

Maybe this death
CLARKE, JOHN HENRY
Age at Death (in years): 52
GRO Reference: 1928 D Quarter in WOOLWICH Volume 01D Page 1165