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Castle Park Heritage Part 3: Earl of Northampton

In 1040, Siward became the first Earl of Northampton. Then, in 1054, he fought Mac Bethad Mac Findlaich, an event that later inspired a character in one of William Shakespeare's most famous plays, Macbeth. Siward passed away in 1055, leaving his titles to his son, Waltheof.

Even though none of William Shakespeare's plays are set in Northampton, the play King John does mention Northampton Castle, which was a location visited by King John and his court.

Fun Fact!

William Shakespeare's Grand-Daughter, Lady Elizabeth Bernard, lived in the house in Abington, Park, now used as Abington Museum and the grounds being Abington Park. After she passed away in 1670, she was buried in the Church of Saint Peter & Paul cemetery in Abington Park.

Waltheof was too young to take over his father's titles after Siward died, so he became Earl in 1065. After the Battle of Hastings in 1066, Waltheof agreed to support William the Conqueror. For this reason, William let him keep his titles and lands. Waltheof stayed at William's royal court until 1068.

In 1070, Waltheof married Judith of Lens, William the Conqueror's niece. However, in 1075, he joined the Revolt of the Earls, a Norman rebellion against the Conqueror's rule. He was arrested and sentenced to death and was beheaded in 1076.

A stone sculpture atop the Guildhall of Waltheof and Judith's wedding

In 1089, Maud, the eldest daughter of Waltheof and Judith, married Simon de Senlis, who became Earl of Northampton. It is believed that Simon may have built the earliest version of Northampton Castle.

Last updated 17 October 2025