Baltimore Maryland USA Heylock Marion Gwendoline Lawson Born 1912 IN Cornwall England Moved to Baltimore Maryland with Her Mum at Age 4 Years IN 2016

Marion Gwendoline Lawson Heylock married Julien Thomas and had a son Lawson W Thomas born c 1934
I would like to trace any surviving relatives of Gwendoline and Julien Thomas

On Gwendoline's mother's obituary it states the following:
PROTHEROE On December 21, 1989 Millicent R (nee Rosewarne), beloved wife of the late John Protheroe, devoted mother of the late Marion G Thomas, dear grandmother of Lawson W Thomas, Sr., dear great grandmother of Deborah K Wenck and Lawson W Thomas, Jr

I would be grateful for any information on these names

many thanks in anticipation