The Origin of "Bulldog" Guckert?

From the TLA Video website:

Bulldog Drummond

REVIEW:
In his first sound film, (Ronald) Colman's splendid performance illustrates why he was one of the most popular actors of his time. Colman is the ever-glib and suave Capt. "Bulldog" Drummond, the ex-British Army officer looking for excitement. He finds it when he places an ad offering his services to anyone for anything. It's Bennett who answers, involving Drummond in a kidnapping, blackmail and murder scheme, as her uncle is being held against his will. The film holds up surprisingly well, and features a nifty plot, good humor and fun characters.

KEYWORDS: Hollywood Classic