Table: bedford (uk parliament constituency)
[['summoned', 'elected', 'assembled', 'dissolved', '1st member', '2nd member'], ['14 august 1553', '1553', '5 october 1553', '5 december 1553', 'edmund mordaunt', 'thomas leigh'], ['17 february 1554', '1554', '2 april 1554', '3 may 1554', 'edmund mordaunt', 'thomas leigh'], ['3 october 1554', '1554', '12 november 1554', '16 january 1555', 'william hall', 'john williams'], ['3 september 1555', '1555', '21 october 1555', '9 december 1555', 'unknown', 'unknown'], ['6 december 1557', '1557 / 58', '20 january 1558', '17 november 1558', 'george gascoigne', 'thomas leigh']]
Statement: among the 1st Member , Edmund Mordaunt was Elected at the earliest date
Statement: among the 1st Member , George gascoign was Elected at the latest date
Statement: the only 2 1st Member Elected in 1554 were Edmund mordaun and William Hall
Statement: the only Unknown 1st Member was Elected in 1555
Statement: the 2nd Member that was Assembled at the latest date was Thomas Leigh