The source mentions a "Brihad Guru Charitra" and a "Laghu Guru Charitra." Which of these is older, and what information is given about its protagonist and the author of the more famous work?

The information presented in Chapter 0 distinguishes between two important texts. The "Laghu Guru Charitra," a work of 707 verses from Wadi, is noted to be "much older" than the "Brihad Guru Charitra" by Saraswati Gangadhar. Both texts share the same protagonist, Shri Samarth Sadguru Narsimha Saraswati Maharaj, whose Samadhi date is given as Shake 1140 in the older text. Regarding the author of the more famous "Brihad" version, Chapter 0 reveals that Shri Saraswati Gangadhar's family name was Sakhare. He was the fifth descendant of Shri Sayandev, who had received a boon from Shri Narsimha Saraswati Maharaj.