101 years after. Einstein finally nailed General Relativity in 1915. After Einstein lectured at Gottingen, Hilbert found the field equations in a matter of weeks. Einstein had struggled with them for years. Hilbert nearly scooped Einstein, but he said Einstein deserves the praise because Einstein blazed the the trail. Einstein struggled with GR from 1907 to 1915 and he nearly had a nervous breakdown from the effort. Many people were near to getting Special Relativity other than Einstein, but GR was an Einstein original from the the git-go. If Einstein had died in 1905 prior to publishing Special Relativity it would have been found by several others. Special Relativity was implicit in Maxwell's Theory of the Electromagnetic Field. That theory was Lorentz Invariant right out of the box. In fact it was Maxwell's (and Faraday's) theory that gave Einstein the clue to Special Relativity.