Complex sentence: Charles John Colwell Orr Hastings, (born in Markham Township, Canada, 23 August 1858; died in Toronto 17 January 1931) was an obstetrician and public health pioneer.
Split into simpler sentences: Charles John Colwell Orr Hastings, born in Markham Township, Canada, 23 August 1858; died in Toronto17 January 1931. He was an obstetrician and public health pioneer.