Although place-name evidence indicates that Birmingham was established by the early 7th century, the exact location of the Anglo-Saxon settlement is uncertain and no known trace of it survives. The modern settlement of Birmingham was established by Peter de Birmingham in 1166 as a planned town around the triangular marketplace that would become the Bull Ring. Traces of this 12th century settlement survive in the foundations of the Birmingham Manor House, now buried under the Birmingham Wholesale Markets, and in Norman fabric from the original church of St Martin in the Bull Ring, discovered when the church was rebuilt in the 1870s.