Payson E. Infelise v. Kadidja Sierra

IN THE UNITED STATES DISTRICT COURT FOR THE DISTRICT OF MONTANA MISSOULA DIVISION PAYSON E. INFELISE, CV 26—28-M-—DLC Plaintiff, VS. OPINION and ORDER KADIDJA SIERRA, Defendant. On February 6, 2026, Payson Infelise sued his sister Kadidja Sierra, alleging injury arising out of Sierra’s administration of their mother’s trust (the “Trust”). (Docs. 1, 9.) Sierra has moved to dismiss for lack of jurisdiction under the “probate exception” to federal diversity jurisdiction, see Marshall v. Marshall,

547 U.S. 293

(2006), or, alternatively, asks the Court abstain from exercising jurisdiction under…