Background
Josselyn was the third son of Ralph Josselyn of Hyde Hall, Sawbridgeworth, Hertfordshire and Catherine Martin of Faversham, Kent.
Josselyn was the third son of Ralph Josselyn of Hyde Hall, Sawbridgeworth, Hertfordshire and Catherine Martin of Faversham, Kent.
In 1545 and 1547, he was Member of Parliament for Buckingham.