What key details about isobel osbourne can be extracted from the following bio? Bio: isobel '' belle '' osbourne strong field -lrb- 1858-1953 -rrb- was robert louis stevenson 's step-daughter and sister of lloyd osbourne .
The answer to this question is:
- known for is stepdaughter of robert louis stevenson- death date is 1953 -lrb- aged 94 or 95 -rrb-- birth date is 1858- name is isobel '' belle '' osbourne strong field- nationality is american- birth place is indianapolis