Katherine De Grandison, Countess of Salisbury
- Born: About 1304, Ashford, Hertfordshire, England
- Marriage: William De Montagu, Earl Of Salisbury
- Died: 23 Nov 1349, Bisham, Berkshire, England at age 45
- Buried: Bisham, Berkshire, England
Katherine married William De Montagu, Earl Of Salisbury. (William De Montagu, Earl Of Salisbury was born in 1302-1303 in Cassington, Oxfordshire, England, died on 30 Jan 1343-1344 in Windsor Castle, Windsor, Berkshire, England and was buried in Bisham, Berkshire, England.)
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