Filing attorney is required to make known, at the time of scheduling the hearing on the petition, the fact of an "unknown" or "unknown whereabouts" status.
"In an independent adoption venue shall be in the county in which the petitioner resides or in the county in which the child to be adopted resides"--K.S.A. 59-2126(a)
Where reliance for venue is based on residence of a newborn child and mother has come to Kansas from another state during the time of her pregnancy, it shall be presumed that residence of mother and child is not in Kansas but in the former state. This presumption may be overcome if the mother appears in person before the Court and by her testimony, and any other evidence, concerning the matter, satisfies that she was a resident of Kansas at the time of the placing of the child for adoption.
Kan. R. Jud. Dist. 3.604