Derrick v. McGrew
In Derrick v. McGrew, 636 S.W.2d 860, 861 (Tex. App.--Texarkana 1982, writ ref'd n.r.e.), the Texarkana court of appeals reversed a trial-court order admitting a will to probate when an administration proceeding concerning the same estate had previously been commenced in another county.
In describing the standards pertinent to the case, the court said, "When estate proceedings are first filed in an appropriate court then that court has exclusive jurisdiction over the proceedings.
While the proceedings are pending in the first court, any action taken in another court on the same matter is void." Id.