Complex sentence: Nickalls was born at Sutton, then in Surrey, the son of Tom Nickalls (1827-1899) who was a stockjobber on the stock exchange and one of the founding members of London Rowing Club.
Split into simpler sentences: Nickalls was born at Sutton, then in Surrey, the son of Tom Nickalls (1827-1899). Tom was a stockjobber on the stock exchange and one of the founding members of London Rowing Club.