I lifted this from the text of his speech:
And I think about the young sailor I met at Walter Reed hospital, still recovering from a grenade attack that would cause him to have his leg amputated above the knee. Six months ago, I would watch him walk into a White House dinner honoring those who served in Iraq, tall and twenty pounds heavier, dashing in his uniform, with a big grin on his face; sturdy on his new leg. And I remember how a few months after that I would watch him on a bicycle, racing with his fellow wounded warriors on a sparkling spring day, inspiring other heroes who had just begun the hard path he had traveled.
He gives me hope.
Taylor Morris sustained injuries to all four limbs, entailing loss of both legs, left arm from the bicep down, and right hand. I don't think he was talking about Taylor Morris and for what it's worth, I think the reference was completely made up.