A campaign has been launched in Great Yarmouth in Norfolk to remember 79 people who drowned in 1845.
They were among thousands of people who'd gone to watch a clown sail down the river in a tub pulled by geese.
59 of the dead were children who were on the bridge to watch a widely-advertised stunt to drum up publicity for a circus that had just arrived in the town.
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Increasing cloud and rain overnight. Blustery and cold tomorrow.
Events are taking place in Cambridge, Norwich, Colchester, Southend and Lowestoft today, to mark Holocaust Memorial Day.
Cloud will increase through the day with rain arriving by dawn.