Hi Deb
Just come across your message from 2014 on Irelandxo.com asking about Samuel Morrow from Kllinchy, Down.
Not sure if I can help and as you probably know a fair number of Morrows live or moved to this part of down during the 17th & 18th centuries. Probably from the Argyll region of Scotland but not necessarily.
My 'Morrows' came lived in Ballymorran and attended the Killinchy Non-Subscribing Presbyterian Church (after the split from the Presbyterian Church) with the Rev'd Samuel Watson.
In the mid-1920s a relative, Lily Campbell, came over to UK from New Zealand to research her family roots - her mother was my GG-aunt, Jane Morrow (1834-1912). Jane's father was William Grant Campbell from Caithness in Scotland - they met and married in NZ. Lily left two pages of notes on her findings with my grandfather (his Jane's cousin) Harold Morrow - whose family home was in Wembley, near London. I discovered a few years back (2016) that some relatives still live in Down and we have visited them a few times since. Lily kept in touch with these relatives until her death in 1957.
Jane Morrow's brother (my G-grandfather) was John Morrow 1831-1912 (a common forname in the family). Their father was married three times (the earlier wives died fairly young) - he was also a John Morrow (1793-1856). This John had at least one brother, Andrew Morrow, but no other siblings have been identified. Andrew had several children of whom one, also Andrew, emigrated to Australia and as Lily's notes have it 'died there as a very old man'.
John & Andrew's father is also thought to be an Andrew Morrow (possibly died 1767) but there are few confirnming facts.
We may be related to your Morrows, if you'd like to explore more please let me know. I'd be happy to share our family tree on Ancestry with you so you could check all the various connections.
Hope to hear from you,
Mike Morrow