Among a sample of 140 OB associations and clusters , we want to identify probable parent associations for the Guitar pulsar ( PSR B2224+65 ) which would then also constrain its age . For this purpose , we are using an Euler-Cauchy technique treating the vertical component of the Galactic potential to calculate the trajectories of the pulsar and each association into the past . To include errors we use Monte-Carlo simulations varying the initial parameters within their error intervals . The whole range of possible pulsar radial velocities is taken into account during the simulations . We find that the Guitar pulsar most probably originated from the Cygnus OB3 association \approx 0 { . } 8 \mathrm { Myr } ago inferring a current radial velocity of v _ { r } \approx - 30 \mathrm { km / s } , consistent with the inclination of its bow shock .