As defendants had indication as early as the very inception of the action that plaintiff guardian ad litem may have improperly placed venue in Bronx County, their nearly two-year delay in seeking a change of venue on that ground was not sufficiently diligent to justify departure from the time requirements of CPLR 511 (a) ( see, Roman v. Brereton, 182 A.D.2d 556, 557). Nor do defendants sufficiently demonstrate that the convenience of material non-party witnesses would be served by a change of venue to New York County ( see, Brunner v. Joubert, 118 A.D.2d 424, 425).
Concur — Sullivan, J.P., Ellerin, Nardelli and Williams, JJ.