Muhammed Yusuf Khan enlisted under Chanda Sahib who was then the Nawab of Arcot. While staying in Arcot he fell in love with a 'Portuguese' Christian (a loose term for a person of mixed Indo-European descent or Luso-Indian) girl named Marcia / Marsha , and married her. In 1751, there was an ongoing scuffle between Muhammed Ali Khan Wallajah, (who was the son of the previous Nawab of Arcot Anwaruddin Muhammed Khan hence the rightful claimant) and Chanda Sahib his relative and a pretender, for the throne of Arcot. The former sought the help of British and the latter the French. Chanda Sahib
Muhammed Yusuf Khan surviving there as the people there were kindly disposed towards Yusuf Khan; he had once saved Alwarthirunagari, a few years previously, from a Dutch invasion. As per Maasa's last wish, and to maintain secrecy, Srinivasa Rao named the boy Mathuranayagam (which was the original Hindu name of Yusuf Khan) and brought him up in the Christian faith (Maasa was a Christian). Yusuf Khan's descendants later moved to Palayamkottai. The recorded history on Muhammed Yusuf Khan seem to end with the incident of his hanging and there is no or only sketchy data on what happened to his family, after that.