Paul Sequens Esaias Toll was a Swedish construction engineer and co-founder, together with Ivar Kreuger, of the construction company Kreuger & Toll.

Ivar Kreuger was a Swedish civil engineer, financier, entrepreneur and industrialist. In 1908, he co-founded the construction company Kreuger & Toll Byggnads AB, which specialized in new building techniques. By aggressive investments and innovative financial instruments, he built a global match and financial empire. Between the two world wars, he negotiated match monopolies with European, Central American and South American governments, and finally controlled between two thirds and three quarters of worldwide match production, becoming known as the "Match King".