I found this in Google, hope it is the right one.
Try it yourself and you might find the author.
His is a place no one can take,
The void he leaves cannot be filled,
For the mark he made, stays, fresh on us,
Although his heart has stilled.
Though the years pursue their relentless course,
And images are replaced,
And memories grow dim and fade,
And time obscures that familiar face,
And even a name be forgot,
And the things he said, and did,
And lives more noble may come and go,
But what he was cannot be hid.
The lessons he unknowingly taught,
By being what he was,
Have certainly changed the lives he met,
As his life touched ours.
So that the course which they now take,
Points somehow higher than before,
A true and gently comrade,
Has opened an unknown door.
So although his life on Earth is done,
His heritage will not rust,
For parts of him, that was, remain,
And live on as part of us.