abundance ...1575 obs. rare
apparently from an alteration of 'uberty' abundance, after 'umber' number
FIRST DOCUMENTED USE
1575 - see Example below
"...Then in Philosophy both morall and naturall, I think he be
az naturally overseen: beside poetrie and Astronomie,
and oother hid sciencez, as I may guesse by
the omberty of hiz books;..."
From: A Letter: Whearin part of the entertainment untoo the
Queenz Majesty at Killingwoorth Castl,
in Warwik Sheer in this Soomerz Progress.
By: Robert Laneham, 1575
• A New English Dictionary on Historical Principles,
James Murray, 1887-1933