born 1905, Magdeburg, Ger.
died March 22, 1978, San Juan, P.R.
German-born U.S. circus acrobat.
He founded the Great Wallendas acrobatic troupe, which achieved fame in Europe for its four-man pyramid and cycling on the high wire without a safety net. His wife, Helen Kreis (1910–96), joined the troupe in 1926 and later was balanced at the peak of the seven-person pyramid, the most famous of the Wallendas' acts. The troupe traveled with the U.S. Ringling Brothers and Barnum & Bailey Circus (1928–46), then performed as freelancers. Karl's nephew Gunther (1927–96) trained on the wire from age five; when a pyramid collapsed in 1962, Gunther was the only member left standing and rescued three who were clinging to the wire; two others were killed and one was paralyzed. Two troupe members died in accidents in 1963 and 1972. Karl died in a fall from a wind-whipped wire 123 ft (37 m) above a street in San Juan.