Wendy, Can find no record of a Paton being involved with the Austin motor co. but Ernest L Payton was chairman from 1941 until his death in 1946.
He was registered in 1877 West Bromwich and died in 1946 Gloucester.I would think it was a family plot for him to have been brought from Glos.to be buried in Key hill.
Ernest Leopold Payton 1881 census,transcriber unsure of spelling of the surname but it was PAYTON.
Dwelling: The Woodlands Park Rd
Census Place: Handsworth, Stafford, England
Francis W. PAYSON OR PAYTON M 33 M Birmingham, Warwick, England
Rel: Head
Occ: Jewellers Employ 17 Men & 1 F
Bertha PAYSON OR PAYTON M 31 F Madely, Shropshire, England
Rel: Wife
Occ: Jewellers Wife
Charles W. H. PAYTON U 9 M Handsworth, Stafford, England
Rel: Son
Occ: Scholar
Henry G. PAYSON OR PAYTON U 5 M Handsworth, Stafford, England
Rel: Son
Occ: Scholar
Ernest L. PAYSON OR PAYTON U 4 M Handsworth, Stafford, England
Rel: Son
Edith A. PAYSON OR PAYTON U 3 F Handsworth, Stafford, England
Rel: Daur
Frank H. PAYSON OR PAYTON U 1 M Handsworth, Stafford, England
Rel: Son
Horace E. PAYSON OR PAYTON U 5 m M Handsworth, Stafford, England
Rel: Son
Sarah WILLIAMS U 25 F Hill Top, Stafford, England
Rel: Serv
Occ: General Servant
Elizabeth STANTON U 20 F Kings Norton, Worcester, England
Rel: Serv
Occ: Nurse
Elizabeth PAUGHAN U 14 F Gt Bridge, Stafford, England
Rel: Serv
Occ: Under Nurse
.