Great work! BTW, it's a chetah, not a leopard.
Thank you, and oops...
(cheetah, cheetah, cheetah... ok, got it)
I suppose you have checked if there is not a tag in the png.
Probably the image can be tracked in the SVN repository?
There are no tags or anything in the EXIF data of the image (I assume the 256x256 .png is the original).
Looking through the SVN repo (great idea, BTW), I found in the history for /trunk/images/icons/, someone named "Paul" (Ishenin?) retired the old lazarus icon for "... new made by Laurent", who looks to be the artist of the other 'new' Lazarus icons. According to
http://wiki.freepascal.org/Developer_pages, that is probably Laurent Jacques, listed as "not active". His page at
http://wiki.lazarus.freepascal.org/Wile64 doesn't mention icons.
Does anyone still know how to contact him? I couldn't find any way to leave him a message.
You still did not mention the original picture, but it looks like "mainicon.ico". Maybe this one should be named "mainicon.svg"?
I don't know of the original artist but I think it could be added to images dir.
The icon i took it from was [lazarus]/images/icons/lazarus256x256.png
I assume 'mainicon.ico' was compiled from the six sizes from 256px - 16px pngs. If you'd like to take my drawing as a submission, be my guest. Happy to contribute. I've uploaded a new version with attribution to Laurent in the SVG code.