Willem van Loon died in 1975.
Hendrik Willem van Loon died on March 11, 1944 at the age of 62.
Derk Gerard Willem Spitzen died in 1957.
Theodoor van Loon died in 1649.
Antonius van Loon died in 1962.
Toon van Loon died in 1975.
Willem van Outhoorn died in 1720.
Willem van Rekum died in 1961.
Willem van Blijenbergh died in 1696.
Willem van Haecht died in 1637.
Willem van Herp died in 1677.
Willem van Enckevoirt died in 1534.