Table: bedford_1553
Columns: summoned
elected
assembled
dissolved
1st_member
2nd_member

Question: Who was the 1st member with 2nd member Thomas Leigh and was elected in 1557/58?
SQL: SELECT "1st_member" FROM bedford_1553 WHERE "2nd_member" = 'thomas leigh' AND "elected" = '1557/58'

Question: Who is the second member that was elected in 1555?
SQL: SELECT "2nd_member" FROM bedford_1553 WHERE "elected" = '1555'

Question: Who was dissolved that was elected in 1553?
SQL: SELECT "dissolved" FROM bedford_1553 WHERE "elected" = '1553'