He didn't have one, at least not one that is recorded.
In some old Virginia records relating to land patents (see VA 3398.0) in Kentucky, Daniel Boone's son is shown as Daniel Morgan Boone, Jr. This may have been only to distinguish the younger son from the elder, but it also may be indicative of Daniel's middle name.
August
Tick Licker
wilderness road
boones burrow
Daniel Webster didn't have a middle name.
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Louis Armstrong's middle name was Daniel.
The name of Sarah Boones husband was Marshall Boone.
His parents chose Daniel as Taylor's middle name because his fathers first name is Daniel.
daniel lautner its just taylors middle name
Taylor Lautner's middle name is actually Micheal. His whole name is actually Taylor Micheal Lautner. His middle name is actually his father's first name.His name is Taylor Daniel Lautner
Daniel Bernoulli's middle name was David after his father....... whom he hated