Complex sentence: He was named after his great-grandfather, Vernor Winfield Smith, who was the Minister of Railways and Telephones in Alberta in the 1920s but his mother, named Agnes, changed his name to McBriare Samuel Lanyon DeMarco when he was five years old.
Split into simpler sentences: He was named after his great-grandfather, Vernor Winfield Smith, who was the Minister of Railways and Telephones in Alberta in the 1920s. His mother Agnes changed his name to McBriare Samuel Lanyon DeMarco when he was five years old.