I thought it was him, William Whewell, in response to an almost rant from Samuel Taylor Coleridge about "natural philosophers" (today's scientists) not deserving to be called "philosophers".

I just googled it and found:

Coleridge stood and insisted that men of science in the modern day should not be referred to as philosophers since they were typically digging, observing, mixing or electrifying—that is, they were empirical men of experimentation and not philosophers of ideas.

[...]

There was much grumbling among those in attendance, when Whewell masterfully suggested that in “analogy with artist we form scientist.” Curiously this almost perfect linguistic accommodation of workmanship and inspiration, of the artisanal and the contemplative, of the everyday and the universal –was not readily accepted.

Yeah, that was the story I'd heard.

Another source says:

Coleridge declared that although he was a true philosopher, the term philosopher should not be applied to the association’s members. William Whewell responded by coining the word scientist on the spot. He suggested

by analogy with artist, we may form scientist.

It's funny because nobody remembers S. T. Coleridge as a philosopher but only as a poet. I've read that his philosophical writings were like an eccentric and almost immature version of German idealism. The thing that haunts me is that famous F. Schelling is well read but often misunderstood, so if they both were part of the romantic movement and they were both close to idealism, it could be that they both suffer the same fate.

Anyway, I digressed. That was the story I knew. Basically, a gatekeeping poet separated philosophers and natural philosophers.

It's even curious because there are rumours about men like Coleridge being "half-mad", and recently there have been studies on it. It would be ridiculous (just as history tends to be) if an old mad poet had divided these branches of knowledge on a fit of bad moods.