Hello Helina
Here are some things which may be relevant:
As well as Florence Kate (Q2. 1874) and William Ernest (Q2. 1875) there was also a Sophie/a Elizabeth Habgood registered in Barnstaple in Q2. 1873. Sophie Elizabeth Habgood died Q3. 1873 Cirencester age 0.
A Maria Bartlet married Q2. 1872 Marylebone, London.
William Habgood on the same page.
A William Habgood, Wid, age 47 B. Cirencester, a draper out of business, was living in Kings Langley in 1881.
At the moment, the only death for a Maria Habgood which "fits" is in Q1 1881 in Chippenham, Wilts - which only adds another place!
I realise these may all be totally unrelated, but the names and dates perhaps make it worth looking into?