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Webster's Revised Unabridged Dictionary (1913)
Reckon Reck"on intransitive verb 1. To make an enumeration or computation; to engage in numbering or computing. Shak.
2. To come to an accounting; to make up accounts; to settle; to examine and strike the balance of debt and credit; to adjust relations of desert or penalty.
"Parfay," sayst thou, "sometime he reckon shall."
To reckon for , to answer for; to pay the account for. "If they fail in their bounden duty, they shall reckon for it one day." Bp. Sanderson. -- To reckon on or upon , to count or depend on. -- To reckon with , to settle accounts or claims with; -- used literally or figuratively.
After a long time the lord of those servants cometh, and reckoneth with them.
Matt. xxv. 19. -- To reckon without one's host , to ignore in a calculation or arrangement the person whose assent is essential; hence, to reckon erroneously.
English Heritage Battlefield Report: Northampton 1460:
"...And to him who says that those who reckon without one's host
customarily reckons twice over..."
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Titel: Early american Proverbs and proverbial phrases:
Listet Werke zwischen 1680 und 1832, in denen die Redewendung vorkommt.