where there any conventions ?
Yes
Toledo War
Because of the perceived worthlessness of the Upper Peninsula's remote wilderness, a September 1836 special convention in Ann Arbor rejected the offer.

why did ohio and michigan have such conflict over their state boundaries Poor geographical understanding of the Great Lakes helped produce conflicting state and federal legislation between 1787 and 1805, and varying interpretations of the laws. where there any bloodshed No, it was an almost bloodless boundary dispute. what was this war called ? The Toledo War also known as the Great Toledo War. was there any presidential intervention ? U.S. President Andrew Jackson consulted his Attorney General, Benjamin Butler, for his legal opinion on the border dispute. when did the war come to an end ? It unofficially ended on December 14, 1836 was there any strip created ? Yes, "Toledo Strip". when did this war begin ? 1835 what was it economic significance ? Prior to the rise of the railroad industry, rivers and canals were the major "highways of commerce" in the American Midwest.
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Toledo War [SEP] Frostbitten Convention and the end of the Toledo War
Whigs boycotted the convention. As a consequence, the resolution was rejected and ridiculed by many Michigan residents. Congress questioned the legality of the convention, but accepted the results of the convention regardless of its concerns. Because of these factors, as well as because of the notable cold spell at the time, the event later became known as the Frostbitten Convention.