Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
SEGAR
As described in historical dictionaries
Patronymica Britannica (1860)
SEGAR. SEAGER. A-Sax. sigora, a Conqueror, si70?', victorious ; an ancient personal name, written in Domesday Segar, Sigar, and Sigarus. 2. A northern provincialism for sawyer, from A-Sax. saga, a
Religion of origin: Jewish
Language of origin: Hebrew