Complex sentence: Alexander Keith (October 5,1795--December 14,1873) Born in Halkirk, Scotland, he emigrated to Canada in 1817 and founded the Alexander Keith's brewing company in 1820.
Split into simpler sentences: Alexander Keith (October 5,1795 in Halkirk, Scotland, United Kingdom--December 14,1873) was a Scottish founder of Alexander Keith's brewery in Canada. He emigrated to Canada in 1817 and founded the company in 1820.