The lads who formed the club gave it the name Wilhelmina , the name of the local church near which they held their kickabout games. According to some sources the founders were van Baaren (age 17), G.A Muller, Gerard van Leerdam , J. Bladel, and L. den Hertog . Other sources include Nico Struijs and give the name Henk Mulder in place of Muller. Van Baaren, Muller, van Leerdam and Struijs featured in the club's first ever fixture, a 2-1 win over Be Quick Bospolder.
Van Baaren in the plain jersey, hand on GA Muller's shoulder. The hoops were black and yellow.
The club now chose the name Celeritas (Latin for swift or speedy) and replaced their red white and blue kit with black and yellow hoops.