Yeah, that’s what I found too.
“Alan Chadwick, English master gardener, was a leading innovator of organic farming techniques and influential educator in the field of biodynamic/French intensive gardening.” Wikipedia
“The Chadwick Cherry is a small cherry tomato that means business! Acidic and snappy when ripe, these are about the size of small grapes and are bright red. Plants produce just mind blowing amounts of fruit all season long on indeterminate vines.”
https://store.tomatofest.com/Chadwick_Cherry_Organic_Tomato_Seeds_p/tf-0106.htm