Survey of English Place-Names

Historical Forms

• Sideluue melne late12th AddCh

• Sidelawemelle 1279 Ass

• Sydelouemulle 1332 SR

• Sidlomylle 1412,1489,1533 LBa

• Sedeluues melne 1243 Misc

• Sedelewumille 1378 LBa

• Sidlemill Brigge 1534 LP

• Sydlemill 1593 Ct

Etymology

This name has clearly undergone a process of folk-etymology; there is no hill here which would justify the use of hlaw as the second element, and further, that word is only once found (and that doubtfully) in Surrey place-names. The first element must be a woman's name Sidelufu . This particular compound is not on record, but both elements are common in OE personal names. Hence, 'Sidelufu 's mill,' v. myln .