It was in his capacity as Mayor that Walsh first came to notice, acting as a "representative from the ‘’Urbs Intacta’’ to Queen Elizabeth".
And [he] is coming over to obtain something of her Majesty to maintain his knighthood withal ... Wherein I dare be bold to say, no man exceedeth the said Sir Patrick, with whom, the living God knoweth, the whole city are partakers.’’[4] Walsh was married.
Yet even up to the time of his death his advice was regularly sought by citizens of Waterford on municipal matters, such was his esteem in the town.
F. X. Martin writes "Though it is probable that Walsh knew Francis Lavalin Nugent at Paris he did not join the Irish mission.
Like Patrick Bath he died before it became a reality in 1615 with the acquisition of a friary at Charleville in northern France as headquarters for the Irish Capuchins."