What is "welti"

Welti is a German surname:

• Albert Welti (1862–1912), a Swiss painter and etcher
• Albert J. Welti (1894–1965), a Swiss painter and writer
• Emil Welti (1825–1899), a Swiss politician and father-in-law of Lydia Welti-Escher
• Lydia Welti-Escher (1858–1891), a Swiss patron of the arts and founder of the Gottfried Keller Stiftung