Survey of English Place-Names

Historical Forms

• Sunnabyri 959 BCS1050 13th

• (æt) Sunnan byrg, (into) Sunnanbyrg, Sunnan burges bōc 960 BCS

• æt Sunnanbyrig, to Sunnanbyrig 962 ib

• Sueberie 1086 DB

• Suneberi(a) 1198 Cur t.John Weinbaum

• Soneberi(a) 1316 FA

• Sunneberi 1198 Cur

• Sunnebir' 1274 Ass

• Sunnesbyr' ib.

• Sonnebery 1291 Tax

• Sonnebury 1341 NI

• Sonnesbury 1314 Pat

• Sundebur' 1294 Ass

• Sundbery 1550 PCC

• Sonbury 1428 FA

• Sunbury 1535 VE

• Sumbury 1745 R

Etymology

'Sunna 's burh or stronghold,' cf. Sonning (PN in -ing 68) in Berkshire.