Yes. However, there aren't many (any?) academic articles about the history of polo. I got Laffaye's books through McFarland & Co., thanks to Wikipedia. Gillian is quite a prominent player (though I've never seen her play) and I saw her name again in Polo Times online today, so I thought I would finally create her page. I'd found more about her father and brother, when I created their pages. Her paternal grandfather deserves a page as well not for polo, but for the history of Coca-Cola/Southern reconstruction. Laffaye tells us she is a third-generation polo player, so her paternal grandfather must have played polo, but I'm not sure if there is much out there in terms of references. (That's for the Johnstons; then there is Tommy Biddle, a member of the Biddle family...)