Complex sentence: When Édouard de Nié Port (Nieuport) died one of his engineers, Franz Schneider, joined LFG and started producing new designs under the name Roland which was a trade name adopted to avoid confusion with the LVG firm.
Split into simpler sentences: When Édouard de Nié Port (Nieuport) died, one of his engineers, Franz Schneider, joined LFG and started producing new designs under the name Roland. Roland was a trade name adopted to avoid confusion with the LVG firm.