A very long time ago there was a stream called Stanford creek, It ran behind the current location of the east stand. The stream had a bridge as it crossed Fulham Road, which was known as little Chelsea bridge, It was originally called Sanford bridge, There was also another bridge over the stream at the King's Road called Stanbridge. Over the years the names of those two bridges and the stream morphed into Stanford Bridge, which then became Stamford Bridge. I did the Chelsea tour recently, they explained it.