Château La Croix de Gay has historical ties to Château La Fleur de Gay. Originally, the two estates were jointly owned. Over time, however, the vineyards and holdings were divided, with Château La Fleur de Gay continuing to operate as an independent winery.

The Reynaud family, which owns the property, has close ties to both Château La Fleur de Gay and Château La Croix de Gay. Both wineries share similar terroirs in Pomerol, including the gravelly clay soils ideal for growing Merlot and Cabernet Franc.

Today, Château La Fleur de Gay and Château La Croix de Gay are separate wineries with their own wine styles and characteristics, but they share a common familial and historical connection through the Reynaud family.