Rennae, derived from an ancient Irish clan name, is a unique and distinctive given name. Pronounced as /ˈrɛn.iː/, it is of Gaelic origin and means 'little seal.' This name has a rich historical background, being associated with the O'Rinn sept, who were originally from County Cork in Ireland. The use of Rennae as a given name is relatively rare, contributing to its distinctive and memorable quality.
The name Rennae experienced a steady rise in popularity during the 40s and 50s, peaking with 10 births in both 1949 and 1957. However, it began to decline thereafter, with only five or fewer births per year between 1964 and 1983, except for a slight uptick of six in 1983. Overall, there were 133 births with the name Rennae recorded over this period.