Olliver has Norse origin. The meaning of Oliver is 'ancestor's descendent'. In French and Latin, Olliver means 'olive tree'. It has traditionally been given to boys. It's very popular in many English-speaking countries, including the US, UK, and Australia. In Australia, it was the most popular boys' name in 2015, and from 2013 to 2017, it was England's most popular boys' name. It's so popular in the US that in 2020 it nabbed the third spot on the list provided by Social Security Administration data. Only Liam and Noah were above it. Interestingly, even the Scandinavians use Olliver (or Oliver) as a boy's name. The name Oliver became popular when the book 'Oliver Twist' by Charles Dickens was published.