In 2018, 53 is the most common age for an American (U.S.) Gilbert who is registered male with the Social Security Administration. It is the 550th most common male first name for living U.S. citizens.
― Anonymous User 10/8/2018
3
The name Gilbert was given to 213 boys born in the US in 2016. More than 99.9 percent of people with the first name Gilbert are male.
In Scotland the name Gilbert was picked up and used as the anglicised/normanised form of the similar sounding Gaelic name Gillebride (various spellings) which means servant of St. Bridget. Hence the name became quite popular in Scotland.