Rags Martel reported on the FA's search for living descendants of the founding fathers of the sport earlier this year.
The search has been successful and has unearthed London born descendants as well as people from as far afield as America and New Zealand.
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PC Keith Palmer, 48, stabbed by Khalid Masood while on duty in the grounds of the Palace of Westminster last Wednesday.
Those gathered on the bridge fell silent at 2.40pm - the time the first call was made to police exactly seven days ago.
Simon Lucy, 61, filmed hundreds of hours worth of footage on the London Underground network.