MUNN, MCMUN, MICKLEMUN

[achra]

Would appreciate any help in locating the following ancestors.  I do have Peter's descendents, but cannot find his birth.  William seems to have changed his name three times.  There may be more siblings for Peter but I haven't found them yet.

William Micklemun born circa 1766, possibly to John Micklemun and Jean Micklewrath in Maybole.  He married Jenat Walker in 1788 in Kirkmichael.  They had the following family:

Jenat, b. July 6th 1795 (in church records as McMun, b. Castle Bride?, Coylton)
Peter, b. Coylton 1799 (birth not found, parents listed as above (William Munn/Janet Walker) on death certificate)
James, b. July 9th 1802, (in church records as Munn, b. Drumsnvie?, Coylton)

Thanks

[achra]

I have found two more children for this couple, though not yet their births.  I have never found the birth of my ggg grandfather Peter Munn, born 1799 (according to Census and death records).
1.Agnes, born abt 1788, married Robert Morrison in 1809 in Stair and died in Mauchline in 1855. 
2. William, born abt 1791, married Jane Hood in 1820 in Ochiltree and died in Ochiltree in 1870.
Both death entries gives parents as William Munn and Janet Walker.