Can we draw the following hypothesis from the context?

Context:

Admiral Edward Stafford Fitzherbert, 13th Baron Stafford, KCB (17 April 1864 28 September 1941) was an English peer, holding the title Baron Stafford. He was also a Royal Navy officer who went on to be Commander-in-Chief, Cape of Good Hope Station.

Hypothesis: The 12 other Stafford Baron were all males
It's impossible to say