What information is provided about the 'Laghu Guru Charitra' and how does it compare to the 'Thorale Guru Charitra'?

Based on information from a book called Shri Datta Stavaraj, Chapter 0 describes a separate work known as the 'Laghu Guru Charitra.' This work is distinct from the more famous 'Brihad' or 'Thorale Guru Charitra' by Saraswati Gangadhar. It is much older and shorter, consisting of only 707 verses. Although the protagonist, Shri Samarth Sadguru Narsimha Saraswati Maharaj, is the same in both biographies, the 'Laghu Guru Charitra' provides a specific date for his Samadhi as Shake 1140, highlighting a difference in historical detail.