2 Held in Slaying Laid to RevengeALBION (/F—A 29-year-old Missourian and a woman friend are awaiting grand jury action in the shotgun slaying of his father-in-law, William Larson, 58.Lloyd G. Inman and Virginia Devereaux Ostrander, 33, both, of Albion, waived examination yesterday when arraigned on first degree murder charges before Justice of the Peace Milton Kast. They are in the Orleans County jail.District Attorney J. Kenneth Serve ascribed the slaying to ’revenge.Larson, father lt;■/ 13. wns sho(Friday on a lonely road near h^re as he was driving home from work at Batavia Veterans Hospital.Serve said Inman and Miss Ostrander signed written statements that they had followed Lar* son in another auto, with, her at the wheel.Inman is accused of firing the shotgun from tho othor oar, accord In gto the district attorney.