on 14 July 1649, and was elected a fellow of Lincoln College by order of the parliamentary commissioners, on 19 September 1650, in the place of Thankfull Owen.
On a visit to Samuel Hartlib in 1658 he described how he had been assigned a task related to the cataloguing of the Bodleian Library, one of the interests of the time of the ‘club’, which was a precursor to the Royal Society.
On the Restoration he was deprived of his fellowship at Lincoln College and returned to Ireland, where he professed loyalty, graduated M.D., and became chancellor of the diocese of Meath.
On his return to England he became mathematical master at Christ's Hospital, but after some years he resigned the post and paid a third visit to Ireland, where he was made a commissioner of the revenue, and finally accountant-general.
In these treatises, which were dedicated to the Order of the Garter, and sometimes accompanied by a single folio sheet entitled Novus Annus Luni-solaris,'he proposed to rectify the year so that the first day of the month should always be within a day of the change of the moon, while by a system of compensations the length of the year should be kept within a week of the period of rotation round the sun.