Willbert is of Germanic origin, derived from the elements 'will' meaning 'resolute power' and 'berht' signifying 'bright'. It is a variant spelling of Wilbert or Wilburn. This name was popularized in English-speaking countries through immigrants from Germany and The Netherlands. Notably, it has been used as a given name since at least the 19th century.
"The name Willbert had a consistent presence with five births each in 1918 and 1919. After a gap of three years, it appeared again with six births in 1922 and five more in 1923. The name saw its peak popularity in 1929 with ten births that year. Overall, Willbert was the chosen name for 31 newborns across these years."