What

Which stands for the following geographic objects:

Places in the United States:

geographic objects in Antarctica:

Welch Crag , mountain in Victoria Land
Welch Mountains , mountains in the Palmerland
Welch Peak , mountain in the Ross Dependency
What rocks , cliffs off the coast of Mac Robertson Land
Welchness , headland of Dundee Island, Joinville Islands

Which is the family name of the following people:

Adonijah Welch (1821-1889), American politician
Ann Welch (1917–2002), British pilot, flight instructor and association official
Barbara Welch (* 1948), Canadian badminton player
Benjamin Welch junior (around 1818–1863), American newspaper publisher and politician
Bill Welch (1941–2009), American politician
Bo Welch (* 1951), American production designer, art director and director
Bob Welch (1945–2012), American musician
Bob Welch (baseball player) (1956-2014), American baseball player
Brian Welch (* 1970), American guitarist
Brian Welch (ski jumper) (* 1984), American ski jumper
Bruce Welch (born 1941), British guitarist
Charles Kingston Welch (1861-1929), British inventor
Christopher Evan Welch (1965-2013), American actor
Claxton Welch (born 1947), American football player
Denton Welch (1915–1948), British writer and painter
Florence Welch (* 1986), British singer-songwriter, see Florence + the Machine
Francis Bertram Welch (1876–1949), British classical archaeologist
Frank Welch (1835–1878), American politician
Fritz Welch , American musician
George Welch (actually George Lewis Schwartz ; 1918–1954), American pilot
Gillian Welch (* 1967), American songwriter
Gita Honwana Welch , Mozambican lawyer, politician and development aid advisor
Greg Welch (* 1966), Australian triathlete
Israel Victor Welch (1822–1869), American politician
Ivo Welch (* 1963), German-American economist and university lecturer
Jack Welch (1935-2020), American manager
James Welch (1940-2003), Native American writer
Jane Welch (* 1964), British writer
Jessica Welch (* 1980), Canadian actress
John Welch (1805-1891), American politician
Kevin Welch (born 1955), American singer
Larry D. Welch (* 1934), American Air Force general
Lenny Welch (born 1938), American singer
Lloyd R. Welch (* 1927), American mathematician
Max Welch Guerra (* 1956), German-Chilean political scientist and urban planner
Michael Welch (* 1987), American actor
Noah Welch (* 1982), American ice hockey player
Peter Welch (actor, 1922) (1922–1984), British actor
Peter Welch (politician) (* 1947), American politician
Peter Welch (actor, II) , American actor, director, screenwriter and producer
Phil J. Welch (1895–1963), American politician
Priscilla Welch (born 1944), British marathon runner
Raquel Welch (born 1940), American actress
Richard J. Welch (1869–1949), American politician
Roger Welch (* 1946), American artist
Saunders Welch (around 1711–1787), English judge and philanthropist
Sian Welch (* 1966), American triathlete
Stephen Welch (* 1972), American wheelchair tennis player
Stuart Welch (* 1977), Australian rower
Stuart Cary Welch (1928–2008), American curator
Tahnee Welch (born 1961), American actress
Terry Welch (1939–1988), American computer scientist
Theodore F. Welch (* 1933), American librarian
Thomas Anthony Welch (1884–1959), American clergyman, Bishop of Duluth
W. Wilbert Welch (1918-2015), American theologian
William Welch (wrestler) (born 1977), American wrestler
William A. Welch (1868–1941), American engineer
William Henry Welch (1850–1934), American physician and hygienist
William W. Welch (1818-1892), American politician

Which stands for:

Welch Motor Car Company , American automobile manufacturer
Welch Company , American automobile manufacturer
(2405) Welch , asteroid of the main outer belt

See also:

What a creek
What Iceland
What a township
Welch Award in Chemistry , Chemistry Prize
Welsch
Welsh