Complex sentence: He was born in Bradford and spent his childhood in Baildon: his family owned a long-established textile mill, Thomas Whiteley and Co of Eccleshill, which went out of business in the 1960s.
Split into simpler sentences: He was born in Bradford and spent his childhood in Baildon. His family owned a long-established textile mill, Thomas Whiteley and Co of Eccleshill, which went out of business in the 1960s.