Complex sentence: The mill was shortly owened by the Okisko Company, It was then acquired by the Alberton Manufacturing Company in 1853, and the 106 population mill village was called Alberton at least through the 1870s.
Split into simpler sentences: The mill was owned for a period of time by the Okisko Company, before being acquired by the Alberton Manufacturing Company in 1853. The population was 106 and the mill village was called Alberton at least through the 1870s.