That river

Madeleine and us find a stairway to the Thames embankment by the Shakespeare Globe Theatre and Bear Wharf.

From the web: the river's name appears always to have been pronounced with a simple "t" at the beginning; the Middle English spelling was typically Temese. The "th" lends an air of Greek to the name and was added during the Renaissance, possibly to reflect or support a belief that the name was derived from River Thyamis in the Epirus region of, whence early Celtic tribes are thought to have migrated. However, most scholars now believe Temese and Tamesis come from Celtic Tamesa , possibly meaning 'the dark one'.The name Isis is given to the part of the river running through Oxford, may have come from the Egypti an goddess of that name but is believed to be a contraction of Tamesis, the Latin (or pre-Roman Celtic) name. Richard Coates has recently suggested that the river was called the Thames upriver, where it was narrower and Plowonida down river, where it was too wide to ford. This gave the name to a settlement on its banks, which became known as Londinium from the original root Plowonida (derived from pre-celtic Old European 'plew' and 'nejd,' meaning something like the flowing river or the wide flowing unfordable river).