Complex sentence: His funeral was attended by 500 mourners, including a number of senior loyalists, including Johnny Adair and John White, who acted as pallbearers alongside Fulton's brother Jim and son, Lee.
Split into simpler sentences: His funeral was attended by 500 mourners, including a number of senior loyalists. Among these were Johnny Adair and John White who acted as pallbearers alongside Fulton's brother Jim and son, Lee.