Facts: - name: sir robert barker - nationality: british Based on these bullet points, write a short biography describing the life of robert barker -lrb- commander-in-chief in bengal -rrb- .
The answer to this question is:
sir robert barker -lrb- 1729 ?-- 1789 -rrb- was commander-in-chief in bengal , and the first distinguished artillery officer of the east india company .