Answer : 1. "गुरु अंगद देव"
Explanation :

1. The Gurmukhi script was created by the second Sikh Guru, Guru Angad (1539-1552) in the 16th century AD.

2. He was the second Sikh Guru after the death of Guru Nanak (1469-1539).

3. The Sikh religious book, Guru Granth Sahib or Adi Granth was written in this script.