Re: Sad news: Gregg Kellogg passed away

Hi Pierre-Antoine,

Back in 2022, I learned that the *JSON-LD for Linked Data* Community Group
had begun work on YAML-LD. I found it compelling, and started attending the
calls. From the very beginning, I felt welcome, - thanks to everyone, but
especially to Gregg.

He was always friendly, encouraging, and patient. He reviewed my pull
requests and was always willing to help. His encouragement mattered deeply
to me. It helped me believe that my interest in Linked Data wasn’t futile -
that I could contribute something meaningful, however humble, to a field he
shaped so profoundly.

I continue pursuing this interest in great part because of my interactions
with Gregg.

I will cherish those memories. I am grateful to have known him, and I will
remember him.

Anatoly

On Thu, Nov 20, 2025 at 4:36 PM Pierre-Antoine Champin <
pierre-antoine@w3.org> wrote:

> Dear all,
>
> last week during TPAC, we opened a remembrance book for Gregg. For those
> of you who did not attend TPAC (or if you attended by missed th book):
> if you want to add something in this remembrance book, send me an email
> with your text before the 30 Nov, and I will include it.
>
>    best
>
> On 9/11/25 14:30, Coralie Mercier wrote:
> > 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/
> >
> >
>
>