How to discover if an ancestor was in Cromwell's Army that went to Ireland?

[notaninch]

I think there may be someone in the family who went to Ireland from England circa 1650? He had been living in England, specifically Calne, Wiltshire around this time but there is no trace after then. I suspect he joined the army and went to Ireland and stayed there. I believe it may have been Capt Sankey who commanded 5,000 troops in Calne around this time and he then became a major player in Cromwell's Irish Campaign. Where do I begin to look for records, if they exist, of people who joined the army at this time?

[Sinann]

There was a Colonel Sankey with him.
See second paragraph about half way down.
http://www.libraryireland.com/biography/OliverCromwell.php

An ancestor of Captain Sankey RN was at the siege of Clonmel
Last paragraph
http://www.from-ireland.net/tag/cromwell/
Colonel Sankey also gets a mention on there in the paragraph starting "At about twelve o clock that night"

[notaninch]

There was a Colonel Sankey with him.
See second paragraph about half way down.
http://www.libraryireland.com/biography/OliverCromwell.php

An ancestor of Captain Sankey RN was at the siege of Clonmel
Last paragraph
http://www.from-ireland.net/tag/cromwell/
Colonel Sankey also gets a mention on there in the paragraph starting "At about twelve o clock that night"

Thanks for the reply Sinann I have not seen that particular article before. Just in case I may have confused anyone out there,  the ancestor I refer to was not named Sankey - although he might have been the Captain in the Regiment in which the ancestor I refer to and was named John Lanfere, served. It is John Lanfere I am trying to track and (a) if he was in the Cromwell Army that invaded Ireland and (b) was at the siege of Clonmel, which I think may be the case.

[Sinann]

The quote below is from this thread
http://www.rootschat.com/forum/index.php?topic=446629.0

On a side note, I don't remember where I recently read about this (probably here on Rootschat! LOL), but there is a book you can get at amazon.com called "Cromwellian Settlement of Ireland" by John P Prendergast, 2nd ed, pub. Dublin 1922. The name and address of each Adventurer is listed.

You might find something in this copy of the book
https://archive.org/details/cromwellian00prenrich