Complex sentence: William McCombie (1805--1 February 1880), Scottish agriculturist, was born at Tillyfour, Aberdeenshire, where he founded the herd of black-polled cattle with which his name is associated.
Split into simpler sentences: William McCombie (1805--1 February 1880), was a Scottish cattle breeder and agriculturist. He founded the herd of black-polled cattle with which his name is associated.