Four Revolutionary Soldiers From Pennsylvania..

I had hoped to find more on these men but was unable to, may be one of you readers can help fill in the blanks.
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State of Pennsylvania, County of Alleghany.

William Blakeney, Captain, Allowance $240, Sums received $667.73, Service Virginia Cont'l Line, Placed on roll June (?), 1819, Commencement of pension October 3, 1818, Age 87, Died July 14, 1821.

Michael Huffnagle, Captain, Allowance $240, Sums received $306, Service Penn., Cont'l Line, Placed on roll May 12, 1819, Commencement of pension September (?), 1818, Age 66, December 31, 1819.

Jacob Springer, Ensign, Allowance $96, Sums received $497.59, Service Virginia Cont'l Line,  Placed roll May 16, 1820, Commencement of pension April 11, 1818, Age 70, Died June 16, 1823.

David Steel, Captain, Allowance $240, Service Virginia Cont'l Line, Placed on roll September 24, 1818, Commencement of pension April 27, 1818, Died February 4, 1819.