Did glen campbell write any of his own songs

 Yes.
Glen Campbell wrote at least six of his many songs.

Details:
Glen Campbell lived 81 years and died recently in early August 2017. He was a renowned country singer and composer who won four Grammy Awards.

Some of his own well-known compositions include "Friends", "Back in the race", and "Less of me". He won his Gramm Awards for songs that include "Gentle on my mind", "By the time I get to Phoenix", and "Rhinestone cowboy".

In addition to his Grammy Awards, Glen Campbell also won the Grammy Lifetime Award. 

Answerstrophic and through-composed;