Thwaite is a common element of placenames in North West England, and Yorkshire.
[1][2] It is also found elsewhere in England, including two places called Thwaite in Norfolk and one in Suffolk.
Elsewhere in England it is rare, only three examples occurring in the East Riding and seven in Nottinghamshire.
[5] The name is usually from Old Norse thveit (also written þveit), but sometimes from Old Danish thwēt, both meaning "clearing" or "meadow".
In Norway, the element appears as Tveit (Nynorsk) or Tvedt (Dano-Norwegian).