Dudson, scientist with a Welsh connection!
DudsonInvented the DUDSON Valve (the needle type) used to inflate sports balls everywhere.
Connection: Lived in Abertridwr.
Mr Dudson was in my family line, I think his name was Thomas. I would need to check but his father was Charles. Apparently he used to borrow money from my great grandfather to fund his inventions. I believe his descendants live in Senghenyydd. I might have a photo of him somewhere.