Complex sentence: Clair (Pat) Patterson was born in Mitchellville, Iowa, and graduated from Grinnell College in chemistry where he met his future wife, Lorna (Laurie) McCleary.
Split into simpler sentences: Clair (Pat) Patterson was born in Mitchellville, Iowa, and was graduated from Grinnell College with a degree in chemistry. There, he met his future wife, Lorna (Laurie) McCleary.