British locomotive engineer and designer of the LMS Ivatt Class 2 2-6-2T’s and Ivatt Class 2 2-6-0’s,Ivatt Class 4 2-6-0’s, and designer of the Caprotti Black 5 4-6-0’s and designer of LMS 1000 and 1001 Diesel Locomotives (First Maine Line Diesel) (1886–1976)