Complex sentence: Mays was renowned for competing at Shelsley Walsh, racing there in the early 20s with a pair of Brescia Bugattis, known as'Cordon Bleu' and'Cordon Rouge'.
Split into simpler sentences: Mays was renowned for competing at Shelsley Walsh. He was well known in the early 20s with a pair of Brescia Bugattis, known as'Cordon Bleu' and'Cordon Rouge'.