Background
He was the oldest son of the botanist Humphry Sibthorp.
He was the oldest son of the botanist Humphry Sibthorp.
He was re-elected in 1780, and held the sat until his defeat at the 1784 general election. He was re-elected in 1802, and held the seat until the 1806 general election, when he did not stand again in Lincoln.
1st United Kingdom Parliament. 2nd United Kingdom Parliament. 14th Parliament of Great Britain.
15th Parliament of Great Britain.
18th Parliament of Great Britain]
He was elected as a Member of Parliament (Member of Parliament) for Boston at a by-election in April 1777, after the death of Charles Amcotts Member of Parliament. He was elected as a Member of Parliament (Member of Parliament) for Lincoln at a by-election in April 1800, after the death of George Rawdon Member of Parliament.