The spelling of the name "Geffrey" may seem unusual to some, but it is simply an alternate version of the more common name "Geoffrey". The pronunciation of the name is /ˈdʒɛfri/ in IPA phonetic transcription, with the stress on the first syllable. The use of the letters "e" and "y" instead of "o" and "r" in the spelling is a matter of personal preference, and both variants are widely accepted. Overall, the name "Geffrey" maintains the same meaning and pronunciation as "Geoffrey".
The name Geffrey is derived from the Old French name Geoffroy, which itself originated from the Germanic name Godfrey or Gottfried.
Godfrey consists of two elements: god, meaning god or good, and frey or fried, meaning peace or protection. Therefore, Godfrey can be understood to mean God's peace or God's protection.
Over time, Geoffroy evolved from Godfrey, and its spelling underwent further changes, eventually becoming Geffrey.