Hadfield vs Hatfield

I always get these two Sheffield related names mixed up.

Hadfield Hatfield
Sir Robert Abbott, Baronet Hadfield Dr. William Hatfield
Inventor/ manufacturer of high Mn
steels known as Hadfield Steel
Inventor in 1924 of 18/8 stainless steel, and 321 stainless steel (18Cr-8-Ni+Ti).
1858-1940, Born in Sheffield, Died in Surrey 1882-1943, Born in Sheffield.
Knighted
Son of Robert Hadfield
Wrote over 200 Papers Authored many papers.
Made Hadfields foundry one of largest in World Appointed director of Brown-Firth Research Laboratories (succeeding Harry Brearley)
FRS FRS
Hadfield steel can also refer to some high silicon steels  Stainless Steels and also some high temperature alloys were developed by Hatfield (12Ni-5Mn-4Cr which has high thermal expansion coefficient and 5Ni-4Cr-3Mo which has strength at high temperature).
Obituary Obituary
Advertisements