Utta is a short form of an Anglo-Saxon masculine name containing uht (dawn).
Utta [Joseph Stevenson 1838 Venerabilis Bedæ Historia Ecclesiastica Gentis Anglorum, page 190].
Ytta [Margaret Gelling 1974 English Place-Name Society 50: 403].
uht = dawn [Daniel Haigh 1857 Archæologia Æliana, new series, 1: 190].
— a = termination of pet names, such as Cutha for Cuthwine or Cuthwulf [William Searle 1897 Onomasticon Anglo-Saxonicum, page 1].
“Presbyter quidam nomine Utta” [Joseph Stevenson 1838 Venerabilis Bedæ Historia Ecclesiastica Gentis Anglorum, page 190]: “A certain priest, whose name was Utta” [John Giles 1845 The Ecclesiastical History of the English Nation, page 148].