Savannah Guthrie’s brother-in-law: Who Tommaso Cioni is and why he’s in the news

Savannah Guthrie’s brother-in-law is Tommaso Cioni, the husband of her older sister Annie Guthrie. His name has drawn heightened attention in early February 2026 because investigators have said he was the last known person to see Savannah’s mother, Nancy Guthrie, before she went missing in the Tucson, Arizona area.

Who Tommaso Cioni is

Cioni is married to Annie Guthrie, an author and Savannah Guthrie’s sister. The couple lives in the Tucson area, close to where Nancy Guthrie lived. Public interest in Cioni has largely been driven by the ongoing investigation into Nancy Guthrie’s disappearance rather than by his own public-facing career.

Why people are asking about him now

Nancy Guthrie, 84, was reported missing after she did not appear as expected the morning after she was last seen. Law enforcement has described Cioni as the last known person to have had contact with her in person, after an evening with family.

Authorities have said Nancy Guthrie had dinner with Annie Guthrie and was later driven home by Cioni on Saturday, January 31, 2026 (ET). She was reported missing the following day.

What authorities have said about his role

In public statements, investigators have characterized Cioni’s connection in straightforward terms: he dropped Nancy Guthrie off at her home and is the last known person confirmed to have seen her before she disappeared.

Being the last confirmed contact does not, by itself, establish wrongdoing. Investigations routinely focus early attention on the last known contacts as part of standard timeline-building.

Rumors and misinformation circulating online

Because the case has become widely discussed, a number of claims have circulated online about Cioni that remain unverified. Recent fact-check reporting has addressed some of these rumors, including exaggerated claims about police activity at his home.

If a detail has not been publicly confirmed by investigators or formal court records, it should be treated as unclear at this time.

What to watch next in the case

The most meaningful developments to track are the ones tied to official actions:

• Any public updates from the sheriff’s office about the timeline and evidence

• Whether investigators name a person of interest or make arrests tied to the disappearance

• Any court filings, warrants, or charging documents that clarify what investigators believe happened

Until then, the clearest answer to the question remains: Savannah Guthrie’s brother-in-law is Tommaso Cioni, married to her sister Annie Guthrie, and he is part of the public conversation because of his place in the last-known timeline of Nancy Guthrie’s disappearance.

Sources consulted: The New York Times; Reuters; Associated Press; Newsweek