Hi Fran,
the Jonathan Holt was bult in 198 by Cammell-Laird @ Birkenhead, with a gross tonnage of 3793, 5350 ts deadweaight. She was 390'6" x 52'10" x 12'5", belongong to the John Holt & Co. of Liverpool and originally employed on the Liverpool-West Africa trade route.
On 24 February 1941 (sic) she was sailing in convoy OB.289 when the convoy was attaced by U-97. The Jonathan Holt was not targeted by the sub but sustained a torpedo hit by "accident": it had missed the intended victim & hit the ship behind: the J. Holt. She was hit @ 0212 hrs and did not sink until 1016 that morning; despite the long time afloat, only 3 people managed to save their lives, 52 were killed. The positio of the sinking is given as 61.10 N, 11.55 W, west of the Orkneys.
The above is confirmed by 3 independent sources & can be assessed as reasonably accurate, any notion she may have been lost in 1942 or off Finisterre may be disregarded.
Best wishes, Brian