Meaning and name origin
Gaynor \ga(y)-nor\ as a girl's name (also used as boy's name Gaynor), is of Welsh origin, and the meaning of Gaynor is "white and smooth, soft". Medieval form of the name of Arthur's queen, Guinevere.
For more information, see also the related girl name Jennifer.
Gaynor is not a popular first name for females but a very popular surname or last name for all people (#5096 out of 88799, Top 6%) (Source: 2000 U.S. Population Census).
Displayed below is a comparison of the popularity of the girl name Gaynor and its variant forms. The only popular variation form ranked in the Top 1000/100 is Jennifer (#220). (Source: 2014 Birth Name Statistics).