Fwd: Sad news: Gregg Kellogg passed away

-------- Forwarded Message --------
Subject: Sad news: Gregg Kellogg passed away
Resent-Date: Thu, 11 Sep 2025 12:31:11 +0000
Resent-From: semantic-web@w3.org
Date: Thu, 11 Sep 2025 14:30:47 +0200
From: Coralie Mercier <coralie@w3.org>
To: semantic-web@w3.org

Dear Members of the semantic web community,

We were informed yesterday of the passing last Saturday of Gregg 
Kellogg. It is terrible news but Gregg had been open about his health 
<https://greggkellogg.net/health-faq.html>.

Gregg had been a prolific and appreciated W3C contributor for many years 
as a W3C Invited Expert, most recently as co-chair of the JSON-LD 
Working Group; he was also Chair of several data-related Community 
Groups. He was said to truly value the energy, brilliance, and 
camaraderie he found in his groups, and to feel rewarded for being part 
of such an inventive community.

Over the past 13 years [1], Gregg has been co-editor of 9 published 
recommendations, and a dozen other W3C specifications (CSV2RDF suite, a 
large portion of the RDF 1.2 suite, 1.0 and 1.1 versions of the JSON-LD 
suite, RCH, etc.) Remarkably, Gregg also provided open-source 
implementations of all these specifications (and more), as well a 
numerous test suites that the relevant Working Groups are still using. 
His implication in the JSON-LD Working Group was instrumental in the 
huge success of this W3C technology.

For all this, but also and foremost for his friendliness and good 
nature, he will be missed.

If any of you would like to pay tribute to honor Gregg Kellogg, please 
get in touch with the JSON-LD Working Group Staff Contact, 
Pierre-Antoine Champin <pierre-antoine@w3.org>, as this group is 
currently making plans.

With kind regards,
Coralie Mercier, Director of W3C Marketing & Communications

[1] https://api.w3.org/users/8nomt3nm1n8cw4s44koggo4wcoo8w4s/specifications



[This message was already distributed to:
* the Members mailing list;
* the W3C Groups chairs mailing list;
* the public mailing lists of the WG and CGs that Gregg was chairing: 
public-json-ld-wg public-json-ld public-rdf-tests public-schemaorg]

--
Coralie Mercier (she/her) - Director of W3C Marketing & Communications 
mailto:coralie@w3.org - https://www.w3.org/People/Coralie/