FYI...
From Condit's Fig Varieties: A Monograph:
"Monstrueuse (syn. Grosse Monstrueuse de Lipari). Described by Barron (1868c, 1870, 1891), Hogg (1871; with figure), and Eisen (1888, 1901). Illustrated by Barron (1870) from fruits produced at Chiswick; he reported it as Grosse Monstrueuse de Lipari, a French variety, comparatively unknown in England. P.I. No. 18,846 of the Chiswick collection has fruited in several test orchards under the name of Monstrueuse. Doubt has existed as to the identity of this variety, which, according to Barron, has a lightbrown or chestnut-colored skin in England, while California specimens are green in color. This discrepancy can be explained by the fact that Barron’s account is of the brebas only, which in California have a general green color but are commonly flushed with violet from the underlying colored meat. P.I. No. 18,878, labeled Dr. Hogg’s Clare, is the same as Monstrueuse. In England it is essentially a “first-bearing” kind, and rarely yields a second crop."
There is more, but that may help with the naming confusion.